Iss #152 - Add a minute delay to installation scan to resolve race con

There seems to be a race condition present in the startup of how things
are loaded/registered. An easy fix for this is to simply put a delay.
Should this crop up again, we could add a more expensive fix that would
check if the provider is registered, and if not add it on the fly.

src/main/java/org/eclipsefoundation/git/eca/tasks/GithubInstallationUpdateTask.java

@@ -81,7 +81,7 @@ public class GithubInstallationUpdateTask {
      * Every 1h, this method will query Github for installations for the currently configured application. These
      * installations will be translated into database entries for a persistent cache to be loaded on request.
      */
-    @Scheduled(every = "1h")
+    @Scheduled(every = "1h", delay = 1)
     @ActivateRequestContext
     public void revalidate() {
         // if not enabled, don't process any potentially OOD records