Update astroid requirement from <=2.5,>=2.4.0 to >=2.4.0,<2.6

[dependabot]

Updates the requirements on astroid to permit the latest version.

Changelog

Sourced from astroid's changelog.

What's New in astroid 2.5.1?

Release Date: 2021-02-28

• The context.path is reverted to a set because otherwise it leads to false positives for non numpy functions.

  Closes #895 #899

• Don't transform dataclass ClassVars

• Improve typing.TypedDict inference

• Fix the Duplicates found in MROs false positive.

  Closes #905 Closes PyCQA/pylint#2717 Closes PyCQA/pylint#3247 Closes PyCQA/pylint#4093 Closes PyCQA/pylint#4131 Closes PyCQA/pylint#4145

What's New in astroid 2.5?

Release Date: 2021-02-15

• Adds attr_fset in the PropertyModel class.

  Fixes PyCQA/pylint#3480

• Remove support for Python 3.5.

• Remove the runtime dependency on six. The six brain remains in astroid.

  Fixes PyCQA/astroid#863

• Enrich the brain_collection module so that __class_getitem__ method is added to deque for python version above 3.9.

• The context.path is now a dict and the context.push method returns True if the node has been visited a certain amount of times.

  Close #669

• Adds a brain for type object so that it is possible to write type[int] in annotation.

  Fixes PyCQA/pylint#4001

• Add __class_getitem__ method to subprocess.Popen brain under Python 3.9 so that it is seen as subscriptable by pylint.

... (truncated)

Commits

• 79d7237 Fix version for 2.5.1 tag
• 181642f Solves "Duplicates found in MROs" false positives. (#905, #916)
• 8c2a13f Upgrade copyrite notice
• e230455 Add copyrite aliases like in pylint
• 8e93ff4 Add pyupgrade to the pre-commit configuration
• d866e65 Upgrade the version handling to mirror pylint's
• fd90613 Upgrade the doc about release
• f3a7c35 Update ChangeLog
• 5f2cfb8 Don't transform dataclass ClassVars (#914)
• 0f8e233 Update license metadata
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 91.329% when pulling 4e482ee on dependabot/pip/astroid-gte-2.4.0-and-lt-2.6 into cec9422 on master.

[dependabot]

A newer version of astroid exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.