alter CI triggers for testing

Author: Anton-4

.github/workflows/ci_manager.yml

@@ -1,5 +1,5 @@
 on:
-  pull_request:
+#  pull_request:
 
 # cancel current runs when a new commit is pushed
 concurrency:

.github/workflows/ci_zig_benchmarks.yml

@@ -1,6 +1,8 @@
 on:
   workflow_call:
   workflow_dispatch:
+  # temporary for testing
+  pull_request:
 
 name: Zig Interpreter Benchmarks