chore(deps): Bump regex from 1.9.0 to 1.9.1 (#17915)

Bumps [regex](https://github.com/rust-lang/regex) from 1.9.0 to 1.9.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rust-lang/regex/blob/master/CHANGELOG.md">regex's
changelog</a>.</em></p>
<blockquote>
<h1>1.9.1 (2023-07-07)</h1>
<p>This is a patch release which fixes a memory usage regression. In the
regex
1.9 release, one of the internal engines used a more aggressive
allocation
strategy than what was done previously. This patch release reverts to
the
prior on-demand strategy.</p>
<p>Bug fixes:</p>
<ul>
<li>[BUG <a
href="https://redirect.github.com/rust-lang/regex/issues/1027">#1027</a>](<a
href="https://redirect.github.com/rust-lang/regex/issues/1027">rust-lang/regex#1027</a>):
Change the allocation strategy for the backtracker to be less
aggressive.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rust-lang/regex/commit/a47e2455ff29ab4c765c0716a484c75f226b5c5a"><code>a47e245</code></a>
1.9.1</li>
<li><a
href="https://github.com/rust-lang/regex/commit/4136a1b850e9634b4494f48fa971328b0b058850"><code>4136a1b</code></a>
deps: bump regex-automata to 0.3.1</li>
<li><a
href="https://github.com/rust-lang/regex/commit/bd87969357cf309641e3296d603328672075ea19"><code>bd87969</code></a>
regex-automata-0.3.1</li>
<li><a
href="https://github.com/rust-lang/regex/commit/663fc54707454c5f99f889e445ea798bd314c52d"><code>663fc54</code></a>
changelog: 1.9.1</li>
<li><a
href="https://github.com/rust-lang/regex/commit/4e89cbf607c761d47f5285133fe791d284d3d313"><code>4e89cbf</code></a>
automata/nfa/backtrack: fix memory usage</li>
<li><a
href="https://github.com/rust-lang/regex/commit/c51486d9f102bdf4ecb657a437c164fd7f425096"><code>c51486d</code></a>
fuzz: tweak limits</li>
<li><a
href="https://github.com/rust-lang/regex/commit/54690c2dbc108f4df9ad8b1c94a712e65da37d11"><code>54690c2</code></a>
doc: fix typos</li>
<li><a
href="https://github.com/rust-lang/regex/commit/7c3463d57f35c08da9f4506297f5e26249547a04"><code>7c3463d</code></a>
regex-cli: update compile-test and add recent measurements</li>
<li><a
href="https://github.com/rust-lang/regex/commit/53786ce79766444a351539a6c1471edd03748feb"><code>53786ce</code></a>
regex-cli-0.1.0</li>
<li><a
href="https://github.com/rust-lang/regex/commit/a40b1e5380a26bf08ee15cffd3db9a91611ac20e"><code>a40b1e5</code></a>
regex-cli: make it publishable</li>
<li>See full diff in <a
href="https://github.com/rust-lang/regex/compare/1.9.0...1.9.1">compare
view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=regex&package-manager=cargo&previous-version=1.9.0&new-version=1.9.1)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after
your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge
and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating
it. You can achieve the same result by closing it manually
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>