Auto merge of #27950 - servo:dependabot/cargo/indexmap-1.6.1, r=jdm

Bump indexmap from 1.6.0 to 1.6.1

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.6.0 to 1.6.1.
<details>
<summary>Commits</summary>
<ul>
<li><a href="453278eb98"><code>453278e</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/bluss/indexmap/issues/165">#165</a> from cuviper/release-1.6.1</li>
<li><a href="4728acf9ab"><code>4728acf</code></a> Release 1.6.1</li>
<li><a href="ea8abb2982"><code>ea8abb2</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/bluss/indexmap/issues/158">#158</a> from cuviper/serde_seq</li>
<li><a href="3b33a8e207"><code>3b33a8e</code></a> Add serde_seq to serialize maps as a sequence</li>
<li><a href="dade2bfb65"><code>dade2bf</code></a> Use collect_map/seq to simplify serializers</li>
<li><a href="b5ac29e806"><code>b5ac29e</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/bluss/indexmap/issues/160">#160</a> from cuviper/more-vec</li>
<li><a href="4819253412"><code>4819253</code></a> Document the first/last methods</li>
<li><a href="eca535de3a"><code>eca535d</code></a> Return &amp;K in first_mut/last_mut</li>
<li><a href="63788568c0"><code>6378856</code></a> Add more Vec/slice-like methods to maps and sets</li>
<li><a href="59e283344f"><code>59e2833</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/bluss/indexmap/issues/164">#164</a> from bluss/gh-actions</li>
<li>Additional commits viewable in <a href="https://github.com/bluss/indexmap/compare/1.6.0...1.6.1">compare view</a></li>
</ul>
</details>
<br />

[![Dependabot compatibility score](https://api.dependabot.com/badges/compatibility_score?dependency-name=indexmap&package-manager=cargo&previous-version=1.6.0&new-version=1.6.1)](https://dependabot.com/compatibility-score/?dependency-name=indexmap&package-manager=cargo&previous-version=1.6.0&new-version=1.6.1)

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)
- `@dependabot use these labels` will set the current labels as the default for future PRs for this repo and language
- `@dependabot use these reviewers` will set the current reviewers as the default for future PRs for this repo and language
- `@dependabot use these assignees` will set the current assignees as the default for future PRs for this repo and language
- `@dependabot use this milestone` will set the current milestone as the default for future PRs for this repo and language
- `@dependabot badge me` will comment on this PR with code to add a "Dependabot enabled" badge to your readme

Additionally, you can set the following in your Dependabot [dashboard](https://app.dependabot.com):
- Update frequency (including time of day and day of week)
- Pull request limits (per update run and/or open at any time)
- Out-of-range updates (receive only lockfile updates, if desired)
- Security updates (receive only security updates, if desired)

</details>

Cargo.lock

@@ -2601,9 +2601,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.9.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00d63df3d41950fb462ed38308eea019113ad1508da725bbedcd0fa5a85ef5f7"
+checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
 
 [[package]]
 name = "hashglobe"
@@ -2850,9 +2850,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.6.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55e2e4c765aa53a0424761bf9f41aa7a6ac1efa87238f59560640e27fca028f2"
+checksum = "4fb1fa934250de4de8aef298d81c729a7d33d8c239daa3a7575e6b92bfc7313b"
 dependencies = [
  "autocfg",
  "hashbrown",