Merge branch 'main' into renovate/github.com-buildpacks-pack-0.x

Author: akerekes

.github/actions/client/install/action.yml

@@ -25,7 +25,7 @@ runs:
       run: mv ~/go/bin/client /tmp/client && mv /tmp/client ${{ inputs.cache-path }}
       shell: bash
     - name: Cache client
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{ inputs.cache-path }}
         key: ${{ inputs.cache-key }}

.github/workflows/buildpack-integration-test.yml

@@ -109,7 +109,7 @@ jobs:
       # INSTALL CONFORMANCE CLIENT
       - name: Check for cached conformance test client
         id: check-for-cached-client
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/go/bin/client
           key: ${{ steps.set-cached-client-version.outputs.key }}
@@ -144,7 +144,7 @@ jobs:
       # if-condition on each step will effectively skip optional tests
       - name: Retrieve conformance client
         if: ${{ matrix.builder-source }}
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/go/bin/client
           key: ${{ needs.download-conformance-client.outputs.cache-key }}