Bump regex from 1.4.2 to 1.6.0 in /rust

[dependabot[bot]]

Bumps regex from 1.4.2 to 1.6.0.

Changelog

Sourced from regex's changelog.

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'.

1.5.5 (2022-03-08)

This releases fixes a security bug in the regex compiler. This bug permits a vector for a denial-of-service attack in cases where the regex being compiled is untrusted. There are no known problems where the regex is itself trusted, including in cases of untrusted haystacks.

• SECURITY #GHSA-m5pq-gvj9-9vr8: Fixes a bug in the regex compiler where empty sub-expressions subverted the existing mitigations in place to enforce a size limit on compiled regexes. The Rust Security Response WG published an advisory about this: https://groups.google.com/g/rustlang-security-announcements/c/NcNNL1Jq7Yw

1.5.4 (2021-05-06)

... (truncated)

Commits

• fc9ee6a 1.6.0
• 8ddc8ec deps: bump regex-syntax to 0.6.27
• 8c0eccd regex-syntax-0.6.27
• dee5c25 changelog: 1.6.0
• 9ca3099 regex: fix clippy lints up to rust 1.41.1
• de83828 syntax: fix clippy lints up to rust 1.41.1
• b87cd88 syntax: include only the start of the character class on error
• 9d1478c doc: fix typos
• 7d21662 doc: clarify Captures::len includes non-matching captures
• 5e98788 perf: use is_match_at instead of shortest_match_at
• Additional commits viewable in compare view

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