Bump docker/login-action from 3 to 4 (#743)

Author: dependabot[bot]

.github/workflows/dev_build.yml

@@ -23,7 +23,7 @@ jobs:
         continue-on-error: true
 
       - name: 🔐 Login to Docker Hub
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: registry.cevi.tools
           username: ${{ secrets.DOCKERHUB_USERNAME }}

.github/workflows/prod_build.yml

@@ -23,7 +23,7 @@ jobs:
         continue-on-error: true
 
       - name: 🔐 Login to Docker Hub
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: registry.cevi.tools
           username: ${{ secrets.DOCKERHUB_USERNAME }}