CI: update the Clang toolchain workaround #1481

Job	Run time
CI (ubuntu-22.04, 6.4, e2ee)	4m 4s
CI (ubuntu-22.04, 6.4)	2m 31s
CI (ubuntu-22.04, 6.4, GCC, e2ee)	10m 50s
CI (ubuntu-22.04, 6.4, GCC)	3m 8s
CI (ubuntu-22.04, 5.15, e2ee)	3m 38s
CI (macos-11, 6.4, e2ee)	7m 13s
CI (macos-11, 6.4)	3m 41s
CI (macos-11, 5.15, e2ee)	6m 45s
CI (windows-2019, 6.4, e2ee)	5m 50s
CI (windows-2019, 6.4)	2m 42s
CI (windows-2019, 5.15, e2ee)	5m 9s
CI (ubuntu-22.04, 5.15, e2ee, update-api, codeql)	8m 8s
CI (ubuntu-22.04, 5.15, GCC, update-api)	3m 6s
	1h 6m 45s

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