Bump regex from 1.5.5 to 1.7.0

[dependabot[bot]]

Bumps regex from 1.5.5 to 1.7.0.

Changelog

Sourced from regex's changelog.

1.7.0 (2022-11-05)

This release principally includes an upgrade to Unicode 15.

New features:

• [FEATURE #832](rust-lang/regex#916): Upgrade to Unicode 15.

1.6.0 (2022-07-05)

This release principally includes an upgrade to Unicode 14.

New features:

• [FEATURE #832](rust-lang/regex#832): Clarify that Captures::len includes all groups, not just matching groups.
• [FEATURE #857](rust-lang/regex#857): Add an ExactSizeIterator impl for SubCaptureMatches.
• [FEATURE #861](rust-lang/regex#861): Improve RegexSet documentation examples.
• [FEATURE #877](rust-lang/regex#877): Upgrade to Unicode 14.

Bug fixes:

• [BUG #792](rust-lang/regex#792): Fix error message rendering bug.

1.5.6 (2022-05-20)

This release includes a few bug fixes, including a bug that produced incorrect matches when a non-greedy ? operator was used.

• [BUG #680](rust-lang/regex#680): Fixes a bug where [[:alnum:][:^ascii:]] dropped [:alnum:] from the class.
• [BUG #859](rust-lang/regex#859): Fixes a bug where Hir::is_match_empty returned false for \b.
• [BUG #862](rust-lang/regex#862): Fixes a bug where 'ab??' matches 'ab' instead of 'a' in 'ab'.

Commits

• f871a8e 1.7.0
• ca7b99c changelog: 1.7.0
• ea3b132 regex-syntax-0.6.28
• 9a18927 syntax: update to Unicode 15
• 0d0023e rure-0.2.2
• 3bac5c8 capi: add 'rlib' crate type
• 159a63c doc: add a note about the empty regex
• fc6f5cc readme: re-word usage to remove version number
• 67824c7 ci: switch to dtolnay/rust-toolchain
• 5466076 capi: fix 'unused return value' warnings
• Additional commits viewable in compare view

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Superseded by #111.