Update pybase64 requirement from >=0.4.0 to >=1.5.0

[dependabot]

Updates the requirements on pybase64 to permit the latest version.

Release notes

Sourced from pybase64's releases.

v1.5.0

What's Changed

• Speed-up translation on aarch64
• Fix invalid data successfully decoded when using altchars (slice ends with padding)
• Fix thread safety selecting codec
• Add padded and wrapcol parameters to b64encode
• Add padded parameter to urlsafe_b64encode
• Add padded parameter to b64decode & urlsafe_b64decode
• urlsafe_b64decode now defaults to padded=False to align with Python 3.15 behavior
• Add ignorechars and canonical parameters to b64decode
• Handle excess padding with the same behavior as CPython 3.15
• Reject non-ASCII strings in b64decode when validate=False
• Deprecate accepting the + and / characters with an alternative alphabet when decoding
• Use ValueError instead of AssertionError on altchars length validation
• Add SBOM to PyPI wheels
• Publish python 3.15 wheels
• Drop python 3.8 support
• Stop publishing python 3.13t wheels

Full Changelog: mayeut/pybase64@v1.4.3...v1.5.0

Commits

• cbcf6af chore: bump pypa/gh-action-pypi-publish to v1.14.2
• 0150921 Bump version to 1.5.0 (#1053)
• 58baa72 [pre-commit.ci] pre-commit autoupdate (#1050)
• 384c14b chore: bump dependencies (#1052)
• e916745 feat: add python 3.15 support (#1051)
• f9de4e4 fix(ci): bump pyhon 3.15 to 3.15.0rc1 in sanitizer build
• e418c14 fix(ci): wheel count
• 975f800 chore: bump cibuildwheel to v4.2.0
• 6c807e5 chore: bump the actions group with 4 updates (#1049)
• 73e32c1 chore: bump setup-uv to v9.0.0 (#1048)
• Additional commits viewable in compare view

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