Update github actions

To reduce the number of 'Node.js 12 actions are deprecated' warnings that are poping in the pipeline.

Note: most of the actions we used are to be updated to node16 so this task isn't complete

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
 
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Overriding default $CARGO_PROJECT_NAME with matrix value
         if: ${{ matrix.cargo_project_name }}
@@ -154,7 +154,7 @@ jobs:
     needs: [ build ]
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
@@ -213,7 +213,7 @@ jobs:
     needs: [ build ]
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Download aggregator
         uses: actions/download-artifact@v3
@@ -341,18 +341,18 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Log in to the Container registry
-        uses: docker/login-action@v1
+        uses: docker/login-action@v2
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
@@ -366,7 +366,7 @@ jobs:
           path: ${{ matrix.project }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           context: ${{ env.CONTEXT }}
           file: ${{ env.DOCKER_FILE }}
@@ -420,7 +420,7 @@ jobs:
       - docker-mithril
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Download mithril-core-doc artifact
         uses: actions/download-artifact@v3
@@ -507,14 +507,14 @@ jobs:
     steps:
 
     - name: Checkout sources
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Get short SHA
       id: slug
       run: echo "::set-output name=sha8::$(echo ${{ github.sha }} | cut -c1-7)"
 
     - name: Setup Terraform
-      uses: hashicorp/setup-terraform@v1
+      uses: hashicorp/setup-terraform@v2
       with:
         terraform_wrapper: false