Iss #148 - Update the revalidation queue to remove closed PRs from queue

Previously, we had high frequency revalidations where the PR was closed,
which will never pass.

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

@@ -137,8 +137,15 @@ public class GithubRevalidationQueue {
             // log the message so we can see what happened
             LOGGER.error("Error while revalidating request w/ ID {}", requestToRevalidate.getId(), e);
         } finally {
-            // whether successful or failed, update the updated field
+            // whether successful or failed, update the updated time field
             requestToRevalidate.setLastUpdated(DateTimeHelper.now());
+
+            // if in a closed state, we shouldn't try to revalidate again as it will never be valid
+            // if a PR is reopened, it should create a new event and validate anyways
+            if ("closed".equalsIgnoreCase(requestToRevalidate.getLastKnownState())) {
+                LOGGER.debug("Tracking request {} set to not revalidate as it was closed", requestToRevalidate.getId());
+                requestToRevalidate.setNeedsRevalidation(false);
+            }
             // push the update with the potentially updated validation flag or error count
             dao.add(new RDBMSQuery<>(wrap, filters.get(GithubWebhookTracking.class)), Arrays.asList(requestToRevalidate));
         }