buildjet: pin location to de (#30955)

* pin location

* stringify

* Fix

* fromjson

* flip the parens

* and those

.github/workflows/selfdrive_tests.yaml

@@ -75,7 +75,7 @@ jobs:
            ((github.repository == 'commaai/openpilot') &&
               ((github.event_name != 'pull_request') || 
                (github.event.pull_request.head.repo.full_name == 'commaai/openpilot'))) && '["x86_64", "aarch64"]' || '["x86_64"]' ) }}
-    runs-on: ${{ (matrix.arch == 'aarch64') && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-20.04' }}
+    runs-on: ${{ fromJson( (matrix.arch == 'aarch64') && '["buildjet-2vcpu-ubuntu-2204-arm", "buildjet-pinned-location_de_arm"]' || 'ubuntu-20.04' ) }}
     steps:
     - uses: actions/checkout@v4
       with:
@@ -94,7 +94,7 @@ jobs:
     strategy:
       matrix:
         arch: ${{ fromJson( (github.repository == 'commaai/openpilot') && '["x86_64", "aarch64"]' || '["x86_64"]' ) }}
-    runs-on: ${{ (matrix.arch == 'aarch64') && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-20.04' }}
+    runs-on: ${{ fromJson( (matrix.arch == 'aarch64') && '["buildjet-2vcpu-ubuntu-2204-arm", "buildjet-pinned-location_de_arm"]' || 'ubuntu-20.04' ) }}
     if: github.ref == 'refs/heads/master' && github.event_name != 'pull_request' && github.repository == 'commaai/openpilot'
     steps:
     - uses: actions/checkout@v4