build(deps): bump Swatinem/rust-cache from 2.8.2 to 2.9.1 (#4453)

Bumps [Swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 2.8.2 to 2.9.1.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@779680d...c193711)

---
updated-dependencies:
- dependency-name: Swatinem/rust-cache
  dependency-version: 2.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/coverage.yml

@@ -49,7 +49,7 @@ jobs:
       CXX: "/usr/bin/clang++-19"
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4
       - run: cargo tarpaulin --locked --workspace --exclude=linkerd2-proxy --exclude=linkerd-transport-header --exclude=spire-proto --no-run
       - run: cargo tarpaulin --locked --workspace --exclude=linkerd2-proxy --exclude=linkerd-transport-header --exclude=spire-proto --skip-clean --ignore-tests --no-fail-fast --out=Xml
         # Some tests are especially flakey in coverage tests. That's fine. We

.github/workflows/pr.yml

@@ -92,7 +92,7 @@ jobs:
     steps:
       - run: git config --global --add safe.directory "$PWD" # actions/runner#2033
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4
       - run: just fetch
       - run: cargo deny --all-features check bans licenses sources
       - run: just check-fmt
@@ -115,7 +115,7 @@ jobs:
     steps:
       - run: git config --global --add safe.directory "$PWD" # actions/runner#2033
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4
       - run: just fetch
       - run: just check-crate ${{ matrix.crate }}
 

.github/workflows/release.yml

@@ -173,7 +173,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
         with:
           ref: ${{ needs.meta.outputs.ref }}
-      - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4
         with:
           key: ${{ matrix.os }}-${{ matrix.arch }}
       - run: just fetch