Turn an exception into a log message to allow further issues to be processed

Reviewed-by: ehelin

Author: rwestberg

bots/notify/src/main/java/org/openjdk/skara/bots/notify/issue/IssueNotifier.java

@@ -336,7 +336,8 @@ public void onNewOpenJDKTagCommits(HostedRepository repository, Repository local
                 var fixVersion = JdkVersion.parse(requestedVersion).orElseThrow();
                 var existing = Backports.findIssue(issue, fixVersion);
                 if (existing.isEmpty()) {
-                    throw new RuntimeException("Cannot find a properly resolved issue for: " + issue.id());
+                    log.severe("Cannot find a properly resolved issue for: " + issue.id() + " - will not update resolved in build");
+                    return;
                 } else {
                     issue = existing.get();
                 }