workflows: enable squid job

Enable the squid ci job now that the squid RC is available. This won't
be required for merge until after the full release.

Signed-off-by: John Mulligan <jmulligan@redhat.com>

Author: phlogistonjohn

.github/workflows/main.yml

@@ -70,7 +70,7 @@ jobs:
         - "pacific"
         - "quincy"
         - "reef"
-      # - "squid"
+        - "squid"
         - "pre-quincy"
         - "pre-reef"
         - "pre-squid"