Update pytest-bdd to v8.0 (#1955)

* Encapsulate all multiline strings in triple-quotes in Gherkin files

Since pytest-bdd v8.0.0 uses the official Gherkin parser, multiline
strings must now be encapsulated by triple-quotes.

See:
- https://pytest-bdd.readthedocs.io/en/stable/#id2
- https://pytest-bdd.readthedocs.io/en/stable/#docstrings

* Remove comments in Gherkin files causing test breakage

These comments break the step matching.

* Fix compatibility of step-functions matching on multiple lines

In pytest-bdd v8.0.0 it is no longer possible to match based on multiple
lines, which breaks essentially all steps that support docstrings. Solve
this by adding a wrapper-function for each of these instances, that
matches the docstring step, and calls the original function.

So, what used to be:

    @then(parse("the output should match\n{regex}"))
    @then(parse('the output should match "{regex}"'))
    def output_should_match(regex, cli_run):
        ...

Is now:

    @then(parse("the output should match"))
    def output_should_match_docstring(cli_run, docstring):
        output_should_match(docstring, cli_run)

    @then(parse('the output should match "{regex}"'))
    def output_should_match(regex, cli_run):
        ...

There is possibly a way around this that is much better than what I've
done here, but this is a start at least.

* Update version requirement of pytest-bdd to >=8.0

* Update tox config to match poetry config

---------

Co-authored-by: Micah Jerome Ellison <micah.jerome.ellison@gmail.com>

tests/bdd/features/install.feature

@@ -3,9 +3,11 @@ Feature: Installing jrnl
     Scenario: Install jrnl with default options
         Given we use no config
         When we run "jrnl hello world" and enter
+            """	
             \n
             \n
             \n
+            """
         Then the output should contain "jrnl configuration created at"
         And the output should contain "For advanced features, read the docs at https://jrnl.sh"
         And the output should contain "Journal 'default' created"
@@ -16,9 +18,11 @@ Feature: Installing jrnl
     Scenario: Install jrnl with custom relative default journal path
         Given we use no config
         When we run "jrnl hello world" and enter
+            """
             default/custom.txt
             n
             \n
+            """
         Then the output should contain "Journal 'default' created"
         And the default journal "custom.txt" should be in the "default" directory
         And the config should contain "encrypt: false"
@@ -28,9 +32,11 @@ Feature: Installing jrnl
         Given we use no config
         And the home directory is called "home"
         When we run "jrnl hello world" and enter
+            """
             ~/custom.txt
             n
             \n
+            """
         Then the output should contain "Journal 'default' created"
         And the default journal "custom.txt" should be in the "home" directory
         And the config should contain "encrypt: false"
@@ -39,9 +45,11 @@ Feature: Installing jrnl
     Scenario: Install jrnl with encrypted default journal
         Given we use no config
         When we run "jrnl hello world" and enter
+            """
             encrypted.txt
             y
             \n
+            """
         Then the output should contain "Journal will be encrypted"
         And the default journal "encrypted.txt" should be in the "." directory
         And the config should contain "encrypt: true"
@@ -52,46 +60,58 @@ Feature: Installing jrnl
    Scenario: Install jrnl with colors by default
         Given we use no config
         When we run "jrnl hello world" and enter
+            """
             \n
             \n
             \n
+            """
         Then the output should contain "Journal 'default' created"
         And the config should contain
+            """
             colors:
                 body: none
                 date: black
                 tags: yellow
                 title: cyan
+            """
 
    Scenario: Install jrnl without colors
         Given we use no config
         When we run "jrnl hello world" and enter
+            """
             \n
             \n
             N
+            """
         Then the output should contain "Journal 'default' created"
         And the config should contain
+            """
             colors:
                 body: none
                 date: none
                 tags: none
                 title: none
+            """
 
     Scenario: Install jrnl with encrypted default journal with no entries
         Given we use no config
         When we run "jrnl -1" and enter
+            """
             encrypted.txt
             y
             n
             test
             test
             n
+            """
         Then the error output should contain "Journal will be encrypted"
         And the default journal "encrypted.txt" should be in the "." directory
         And the config should contain "encrypt: true"
         And the version in the config file should be up-to-date
         When we run "jrnl -1" and enter
-          test
+            """
+            test
+            """
         Then we should be prompted for a password
         And the error output should contain "no entries found"
         And the error output should not contain "Wrong password, try again"