Pin git user to 1gtm in update-crds/update-docs workflows

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/workflows/update-crds.yml

@@ -34,8 +34,8 @@ jobs:
           cd $RUNNER_WORKSPACE
           git clone $url
           cd $(basename $INSTALLER_REPOSITORY)
-          git config user.name "${GITHUB_USER}"
-          git config user.email "${GITHUB_USER}@appscode.com"
+          git config user.name "1gtm"
+          git config user.email "1gtm@appscode.com"
 
       - name: Update crds
         env: