[build] Fix workflows triggering with incorrect attribution on forks

Author: Breakthrough

.github/workflows/build-windows.yml

@@ -30,6 +30,9 @@ on:
 
 jobs:
   build:
+    # Skip scheduled runs in forks: GitHub attributes cron runs to the upstream
+    # workflow author, who then gets emailed when a fork's nightly build fails.
+    if: github.repository_owner == 'Breakthrough' || github.event_name != 'schedule'
     runs-on: windows-latest
     strategy:
       matrix:

.github/workflows/build.yml

@@ -31,6 +31,9 @@ on:
 
 jobs:
   build:
+    # Skip scheduled runs in forks: GitHub attributes cron runs to the upstream
+    # workflow author, who then gets emailed when a fork's nightly build fails.
+    if: github.repository_owner == 'Breakthrough' || github.event_name != 'schedule'
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false

.github/workflows/check-docs.yml

@@ -22,6 +22,9 @@ on:
 
 jobs:
   build:
+    # Skip scheduled runs in forks: GitHub attributes cron runs to the upstream
+    # workflow author, who then gets emailed when a fork's nightly build fails.
+    if: github.repository_owner == 'Breakthrough' || github.event_name != 'schedule'
     runs-on: ubuntu-latest
 
     steps:

.github/workflows/codeql.yml

@@ -22,6 +22,9 @@ on:
 jobs:
   analyze:
     name: Analyze
+    # Skip scheduled runs in forks: GitHub attributes cron runs to the upstream
+    # workflow author, who then gets emailed when a fork's scheduled run fails.
+    if: github.repository_owner == 'Breakthrough' || github.event_name != 'schedule'
     runs-on: ubuntu-latest
     permissions:
       actions: read