Fix two workflow triggers (#2884)

Signed-off-by: Matthias Goerens <mgoerens@redhat.com>

Author: mgoerens

.github/workflows/build.yml

@@ -4,7 +4,7 @@ on:
   # NOTE: There are implementation details in this workflow that require the
   # triggering event be pull_request_target or pull_request. See 
   # TRUSTED_REF before changing the events that can trigger this workflow.
-  pull_request:
+  pull_request_target:
     types: [opened, synchronize, reopened, edited, ready_for_review, labeled]
 
 env:

.github/workflows/owners-redhat.yml

@@ -8,7 +8,7 @@ on:
   # NOTE: There are implementation details in this workflow that require the
   # triggering event be pull_request_target or pull_request. See
   # TRUSTED_REF before changing the events that can trigger this workflow.
-  pull_request:
+  pull_request_target:
     paths:
     - charts/redhat/**/OWNERS
     - charts/community/redhat/**/OWNERS