Update actions/cache

Author: abkfenris

.github/workflows/build-image.yml

@@ -77,7 +77,7 @@ jobs:
         uses: docker/setup-buildx-action@v1.5.1
 
       - name: Cache Docker layers
-        uses: actions/cache@v2.1.6
+        uses: actions/cache@v4.2.4
         with:
           path: /tmp/.buildx-cache
           key: ohw-docker-buildx-${{ inputs.image_name }}-${{ github.sha }}

.github/workflows/build-pixi-image.yml

@@ -73,7 +73,7 @@ jobs:
         uses: docker/setup-buildx-action@v1.5.1
 
       - name: Cache Docker layers
-        uses: actions/cache@v2.1.6
+        uses: actions/cache@v4.2.4
         with:
           path: /tmp/.buildx-cache
           key: ohw-docker-buildx-${{ inputs.image_name }}-${{ github.sha }}