ci: update issue triage configuration to limit label usage to a maximum of 4

Signed-off-by: André Silva <2493377+askpt@users.noreply.github.com>

Author: askpt

.github/workflows/issue-triage.lock.yml

@@ -36,7 +36,7 @@ safe-outputs:
       - provider:ofrep
       - duplicate-candidate
       - needs-info
-    max: 6
+    max: 4
   remove-labels:
     allowed:
       - type:build
@@ -59,7 +59,7 @@ safe-outputs:
       - provider:ofrep
       - duplicate-candidate
       - needs-info
-    max: 6
+    max: 4
   add-comment:
     max: 3
   noop: