Update docker/build-push-action action to v6

Author: renovate[bot]

.github/actions/build-base-img/action.yml

@@ -47,7 +47,7 @@ runs:
       shell: bash
 
     - name: Build Base (versioned)
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       if: ${{ inputs.idris-version != 'latest' }}
       with:
         context: .
@@ -68,7 +68,7 @@ runs:
         cache-to: ${{ steps.calculate-cache-to.outputs.cache-to }}
 
     - name: Build Base (latest)
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       if: ${{ inputs.idris-version == 'latest' }}
       with:
         context: .

.github/actions/build-devcontainer-img/action.yml

@@ -55,7 +55,7 @@ runs:
 
     - name: Build Devcontainer (versioned)
       if: ${{ inputs.idris-lsp-version != 'latest' }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         context: .
         file: devcontainer.Dockerfile
@@ -75,7 +75,7 @@ runs:
 
     - name: Build Devcontainer (latest)
       if: ${{ inputs.idris-lsp-version == 'latest' }}
-      uses: docker/build-push-action@v5
+      uses: docker/build-push-action@v6
       with:
         context: .
         file: devcontainer-sha.Dockerfile

.github/workflows/version-base-build-test.yml

@@ -145,7 +145,7 @@ jobs:
         run: docker image ls
 
       - name: Build ${{ matrix.dockerfile}}
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ${{ matrix.dockerfile }}.Dockerfile

.github/workflows/version-base-deploy.yml

@@ -87,7 +87,7 @@ jobs:
           images: ${{ github.repository }}/${{ matrix.dockerfile }}
 
       - name: Build ${{ matrix.dockerfile}}
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64