Update GitHub action to add deps

Author: camilamacedo86

.github/workflows/sanity.yaml

@@ -28,5 +28,8 @@ jobs:
         with:
           go-version-file: "go.mod"
 
+      - name: Install dependencies required for custom-lint
+        run: sudo apt-get update && sudo apt-get install -y libgpgme-dev
+
       - name: Run golangci linting checks
         run: make lint GOLANGCI_LINT_ARGS="--out-format colored-line-number"