Enable running multiple Core v28 nodes #87

Job	Run time
Prepare	3s
Docs - stable toolchain (recent)	59s
Test - 1.63.0 toolchain (minimal)	2m 33s
Integration tests - stable toolchain (28_0)	1m 20s
Test - 1.63.0 toolchain (recent)	2m 35s
Integration tests - stable toolchain (27_1)	52s
Test - stable toolchain (minimal)	38s
Integration tests - stable toolchain (27_0)	48s
Verify - stable toolchain	18s
Test - stable toolchain (recent)	43s
Integration tests - stable toolchain (26_2)	59s
Integration tests - stable toolchain (26_1)	1m 19s
Integration tests - stable toolchain (26_0)	1m 17s
Integration tests - stable toolchain (25_2)	1m 58s
Integration tests - stable toolchain (24_2)	1m 18s
Integration tests - stable toolchain (23_2)	58s
Integration tests - stable toolchain (22_1)	1m 10s
Integration tests - stable toolchain (0_21_2)	1m 7s
Integration tests - stable toolchain (0_20_2)	1m 15s
Integration tests - stable toolchain (0_19_1)	42s
Integration tests - stable toolchain (0_18_1)	1m 22s
Integration tests - stable toolchain (0_17_1)	1m 37s
Docs - nightly toolchain (recent)	47s
Format - nightly toolchain	11s
Lint - nightly toolchain (recent)	40s
Test - nightly toolchain (minimal)	48s
Test - nightly toolchain (recent)	52s
	29m 9s

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