workflows/e2e_libvirt: get go version from versions.yaml

Changed the workflow to remove the hard-coded go version, instead it
will get from versions.yaml.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>

.github/workflows/e2e_libvirt.yaml

@@ -23,7 +23,6 @@ on:
 
 env:
   CLOUD_PROVIDER: libvirt
-  GO_VERSION: "1.20.8"
   DEBIAN_FRONTEND: noninteractive
 
 jobs:
@@ -36,6 +35,12 @@ jobs:
           fetch-depth: 0
           ref: ${{ inputs.git_ref }}
 
+      - name: Read properties from versions.yaml
+        run: |
+          go_version="$(yq '.tools.golang' versions.yaml)"
+          [ -n "$go_version" ]
+          echo "GO_VERSION=${go_version}" >> "$GITHUB_ENV"
+
       - name: Setup Golang version ${{ env.GO_VERSION }}
         uses: actions/setup-go@v4
         with: