fix(deps): update rust crate regex to 1.6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
regex	dependencies	minor	1.5 -> 1.6

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Release Notes

rust-lang/regex

v1.6.0

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================== This release principally includes an upgrade to Unicode 14.

New features:

• FEATURE #​832: Clarify that Captures::len includes all groups, not just matching groups.
• FEATURE #​857: Add an ExactSizeIterator impl for SubCaptureMatches.
• FEATURE #​861: Improve RegexSet documentation examples.
• FEATURE #​877: Upgrade to Unicode 14.

Bug fixes:

• BUG #​792: Fix error message rendering bug.

v1.5.6

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

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

v1.5.5

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================== 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

v1.5.4

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================== This release fixes another compilation failure when building regex. This time, the fix is for when the pattern feature is enabled, which only works on nightly Rust. CI has been updated to test this case.

• BUG #​772: Fix build when pattern feature is enabled.

v1.5.3

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================== This releases fixes a bug when building regex with only the unicode-perl feature. It turns out that while CI was building this configuration, it wasn't actually failing the overall build on a failed compilation.

• BUG #​769: Fix build in regex-syntax when only the unicode-perl feature is enabled.

v1.5.2

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================== This release fixes a performance bug when Unicode word boundaries are used. Namely, for certain regexes on certain inputs, it's possible for the lazy DFA to stop searching (causing a fallback to a slower engine) when it doesn't actually need to.

PR #​768 fixes the bug, which was originally reported in ripgrep#​1860.

v1.5.1

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================== This is a patch release that fixes a compilation error when the perf-literal feature is not enabled.

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[codecov[bot]]

Codecov Report

Merging #141 (c40013f) into main (ce0df1a) will decrease coverage by 0.40%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #141      +/-   ##
==========================================
- Coverage   90.62%   90.22%   -0.41%     
==========================================
  Files          71       71              
  Lines        4970     4970              
==========================================
- Hits         4504     4484      -20     
- Misses        466      486      +20     

Impacted Files	Coverage Δ
tests/hoard_status.rs	92.37% <0.00%> (-7.63%)	:arrow_down:
src/checkers/history/last_paths.rs	90.90% <0.00%> (-6.50%)	:arrow_down:
tests/hoard_upgrade.rs	96.53% <0.00%> (-1.49%)	:arrow_down:
src/checkers/history/operation/util.rs	80.00% <0.00%> (-0.91%)	:arrow_down:
tests/common/base.rs	86.12% <0.00%> (-0.72%)	:arrow_down:

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