Update actions/cache digest to 5a3ec84

Author: renovate[bot]

.github/workflows/integration_test.yml

@@ -47,7 +47,7 @@ jobs:
 
       - name: Cache wheels
         id: cache-wheels
-        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4
         with:
           path: /home/runner/snap/charmcraft/common/cache/charmcraft
           key: ${{ runner.os }}-wheel-cache-${{ hashFiles('./uv.lock') }}