Update docker/login-action action to v4.2.0

Author: govuk-ci

.github/workflows/build-and-push-image.yml

@@ -40,7 +40,7 @@ jobs:
           show-progress: false
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}

.github/workflows/build-and-push-multiarch-image.yml

@@ -71,7 +71,7 @@ jobs:
           show-progress: false
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
@@ -150,7 +150,7 @@ jobs:
         id: local-head
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
+        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}