build(deps): bump actions/cache from 4.2.0 to 4.2.3 (#772)

Bumps [actions/cache](https://github.com/actions/cache) from 4.2.0 to 4.2.3.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@1bd1e32...5a3ec84)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/integration-test.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: linkerd/dev/actions/setup-tools@v44
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-    - uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57
+    - uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
       with:
         path: target/buildx
         key: buildx-${{ runner.os }}-${{ github.sha }}

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
     - uses: linkerd/dev/actions/setup-tools@v44
     - uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
-    - uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57
+    - uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684
       with:
         path: target/buildx
         key: buildx-${{ runner.os }}-${{ github.sha }}