chore(deps): update docker/build-push-action action to v6.18.0

Author: renovate[bot]

.github/workflows/_docker-publish.yml

@@ -96,7 +96,7 @@ jobs:
 
       - name: "(all target): Build and push Docker image"
         id: build-and-push-all
-        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
         with:
           context: .
           file: ./Dockerfile
@@ -110,7 +110,7 @@ jobs:
 
       - name: "(slim target): Build and push Docker image"
         id: build-and-push-slim
-        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
         with:
           context: .
           file: ./Dockerfile