chore(deps): update docker/login-action action to v3.7.0

Author: renovate[bot]

.github/workflows/build-testflinger-testenv-container.yml

@@ -44,7 +44,7 @@ jobs:
           persist-credentials: false
 
       - name: Log in to the Container registry
-        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}

.github/workflows/server-charm-release.yml

@@ -52,7 +52,7 @@ jobs:
           persist-credentials: false
 
       - name: Log in to the Container registry
-        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}