turn off nightly runs for now

Author: titusfortner

.github/workflows/ruby-examples.yml

@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu, windows, macos ]
-        release: [ stable, nightly ]
+        release: [ stable ]
     runs-on: ${{ format('{0}-latest', matrix.os) }}
     steps:
       - name: Checkout GitHub repo