Don't use Arm runners on forks

Author: diegorusso

.github/workflows/build.yml

@@ -249,7 +249,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-24.04, ubuntu-24.04-aarch64]
+        os: [ubuntu-24.04]
+        include:
+          - os: ubuntu-24.04-aarch64
+            if: ${{ github.repository_owner != 'python' }}
         openssl_ver: [3.0.15, 3.1.7, 3.2.3, 3.3.2]
     env:
       OPENSSL_VER: ${{ matrix.openssl_ver }}
@@ -429,7 +432,10 @@ jobs:
     if: needs.check_source.outputs.run_tests == 'true'
     strategy:
       matrix:
-        os: [ubuntu-24.04, ubuntu-24.04-aarch64]
+        os: [ubuntu-24.04]
+        include:
+          - os: ubuntu-24.04-aarch64
+            if: ${{ github.repository_owner != 'python' }}
     env:
       OPENSSL_VER: 3.0.15
       PYTHONSTRICTEXTENSIONBUILD: 1

.github/workflows/jit.yml

@@ -95,10 +95,12 @@ jobs:
             architecture: aarch64
             runner: ubuntu-24.04-aarch64
             compiler: gcc
+            if: ${{ github.repository_owner != 'python' }}
           - target: aarch64-unknown-linux-gnu/clang
             architecture: aarch64
             runner: ubuntu-24.04-aarch64
             compiler: clang
+            if: ${{ github.repository_owner != 'python' }}
     env:
       CC: ${{ matrix.compiler }}
     steps: