Bump Swatinem/rust-cache from 2.8.2 to 2.9.1 in the github-actions group (#534)

Bumps the github-actions group with 1 update: [Swatinem/rust-cache](https://github.com/swatinem/rust-cache).


Updates `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
  dependency-group: github-actions
...

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/ci.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Update Rust toolchain
         run: rustup update
       - name: Rust Cache
-        uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+        uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
       - name: Clippy
         run: cargo clippy --all-targets --locked -- --deny warnings
       - name: rustfmt
@@ -36,7 +36,7 @@ jobs:
       - name: Update Rust toolchain
         run: rustup update
       - name: Rust Cache
-        uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+        uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
       - name: Run unit tests
         run: cargo test --locked
 
@@ -68,7 +68,7 @@ jobs:
       - name: Install Rust linux-musl target
         run: rustup target add ${{ matrix.arch == 'arm64' && 'aarch64-unknown-linux-musl' || 'x86_64-unknown-linux-musl' }}
       - name: Rust Cache
-        uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2.8.2
+        uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
       - name: Install Pack CLI
         uses: buildpacks/github-actions/setup-pack@06e250da5bb4ccb9a2103719a21d2a7f2252fe83 # v5.11.0
       - name: Pull builder image