Add push trigger for main branch to manual, audit, and standards hook workflows (#421)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jbampton <418747+jbampton@users.noreply.github.com>

Author: Copilot

.github/workflows/pre-commit-audit.yml

@@ -1,7 +1,10 @@
 # https://github.com/j178/prek
 name: Audit hooks
 
-on: [pull_request]
+on:
+  pull_request:
+  push:
+    branches: [main]
 
 permissions:
   contents: read

.github/workflows/pre-commit-manual.yml

@@ -1,7 +1,10 @@
 # https://github.com/j178/prek
 name: Manual hooks
 
-on: [pull_request]
+on:
+  pull_request:
+  push:
+    branches: [main]
 
 permissions:
   contents: read

.github/workflows/pre-commit.yml

@@ -1,7 +1,10 @@
 # https://github.com/j178/prek
 name: Standard hooks
 
-on: [pull_request]
+on:
+  pull_request:
+  push:
+    branches: [main]
 
 permissions:
   contents: read