Bump chrono from 0.4.25 to 0.4.26

[dependabot]

Bumps chrono from 0.4.25 to 0.4.26.

Release notes

Sourced from chrono's releases.

0.4.26

The changes from #807 we merged for 0.4.25 unfortunately restricted parsing in a way that was incompatible with earlier 0.4.x releases. We reverted this in #1113. A small amount of other changes were merged since.

• Update README (#1111, thanks to @​pitdicker)
• Revert backport of #807 (#1113, thanks to @​pitdicker)
• Update to 2021 edition (#1109, thanks to @​tottoto)
• Fix DurationRound panics from issue #1010 (#1093, thanks to @​pitdicker)
• tests: date path consolidate (branch 0.4.x) (#1090, thanks to @​jtmoon79)
• Parse tests nanosecond bare dot (branch 0.4.x) (#1098, thanks to @​jtmoon79)
• yamllint cleanup lint.yml test.yml (#1102, thanks to @​jtmoon79)
• Remove num-iter dependency (#1107, thanks to @​tottoto)

Thanks on behalf of the chrono team (@​djc and @​esheppa) to all contributors!

Commits

• 5b8449e Bump version to 0.4.26
• 7e6646d Update README
• 8bd13db Use result in doctest
• becc222 Revert backport of #807
• 373c6e4 Update to 2021 edition
• e41451d try_verify_against_date_command NFC print progress messages
• b1729f3 try_verify_against_date sanity check date command
• 05c9408 consolidate path to date
• b5b936a Error on negative durations in DurationRound
• c0d848d parse tests around nanosecond parsing bare '.'
• Additional commits viewable in compare view

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