tst_qqmlinspector (and other tests in tests/auto/qml/debugger/) times out on macOS 12 (x86_64) in CI

[...]
agent:2022/03/11 19:33:18 build.go:394: 43: ********* Finished testing of tst_QQmlDebugJS *********
agent:2022/03/11 19:33:18 build.go:394:  43/303 Test  #43: tst_qqmldebugjs ...........................   Passed   34.53 sec
agent:2022/03/11 19:33:18 build.go:394: test 44
agent:2022/03/11 19:33:18 build.go:394:         Start  44: tst_qqmlinspector
agent:2022/03/11 19:33:18 build.go:394: 44: Test command: /Applications/CMake.app/Contents/bin/cmake "-P" "/Users/qt/work/qt/qtdeclarative_standalone_tests/tests/auto/qml/debugger/qqmlinspector/tst_qqmlinspectorWrapperRelWithDebInfo.cmake"
agent:2022/03/11 19:33:18 build.go:394: 44: Test timeout computed to be: 1500
agent:2022/03/11 19:33:18 build.go:394: 44: ********* Start testing of tst_QQmlInspector *********
agent:2022/03/11 19:33:18 build.go:394: 44: Config: Using QtTest library 6.2.4, Qt 6.2.4 (x86_64-little_endian-lp64 shared (dynamic) release build; by Clang 13.0.0 (clang-1300.0.29.30) (Apple)), macos 12.0
agent:2022/03/11 19:33:18 build.go:394: 44: PASS   : tst_QQmlInspector::initTestCase()
agent:2022/03/11 19:33:19 build.go:394: 44: PASS   : tst_QQmlInspector::connect(rectangle/unrestricted)
agent:2022/03/11 19:48:19 build.go:253: Virtual Memory Total: 16106127360, Free:7527768064, UsedPercent:40.957667%
agent:2022/03/11 19:48:20 build.go:264: |Process|Status|   CPU-%|Command
agent:2022/03/11 19:48:20 build.go:287: |      1|    S|0.671852|/sbin/launchd
agent:2022/03/11 19:48:20 build.go:287: |     59|    S|0.381685|/usr/libexec/logd
agent:2022/03/11 19:48:20 build.go:287: |     60|    S|0.273705|/usr/libexec/UserEventAgent (System)
[...]