Disable GitHub Actions CI due to awesome_bot not working

.github/workflows/ci.yml

@@ -1,13 +1,16 @@
 name: Continuous integration
 
-on:
-  push:
-  pull_request:
-  schedule:
-    # Every day at midnight (UTC).
-    # URLs can decay over time. Setting up a schedule makes it possible to be warned
-    # about dead links as soon as possible.
-    - cron: "0 0 * * *"
+# Disabled because awesome_bot fails to run properly on GitHub Actions
+# (429 errors on github.com URLs).
+#
+# on:
+#   push:
+#   pull_request:
+#   schedule:
+#     # Every day at midnight (UTC).
+#     # URLs can decay over time. Setting up a schedule makes it possible to be warned
+#     # about dead links as soon as possible.
+#     - cron: "0 0 * * *"
 
 env:
   RUBY_VERSION: "2.7.2"