Fix setup-go action to use Go version from go.mod

Signed-off-by: Karel Suta <ksuta@redhat.com>

Author: sutaakar

.github/workflows/odh-release.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Set Go
       uses: actions/setup-go@v5
       with:
-        go-version: v1.20
+        go-version-file: './go.mod'
 
     - name: Verify that release doesn't exist yet
       shell: bash {0}