Merge pull request #2479 from bugsnag/je/plat-14405-electron

Move Electron tests to Isolated queue

Author: joshedney

.buildkite/basic/electron-pipeline.yml

@@ -5,7 +5,7 @@ steps:
     - label: "Electron {{matrix.electron_version}} tests - macOS - Node {{matrix.node_version}}"
       timeout_in_minutes: 40
       agents:
-        queue: macos-node-18
+        queue: macos-15-isolated
       env:
         NODE_VERSION: "{{matrix.node_version}}"
         ELECTRON_VERSION: "{{matrix.electron_version}}"