Add special handling for 6.1.1 SDK #195

Job	Run time
toolchain-setup (ubuntu-24.04, 6.1)	1m 10s
toolchain-setup (ubuntu-24.04, nightly-6.2)	1m 21s
toolchain-setup (ubuntu-24.04, 6.0)	57s
toolchain-setup (macos-15, 6.0)	1m 42s
toolchain-setup (macos-13, 6.1)	1m 52s
toolchain-setup (macos-15, 6.1)	1m 31s
builds (ubuntu-24.04, 6.1)	20m 25s
toolchain-setup (macos-15, nightly-6.2)	1m 42s
toolchain-setup (ubuntu-22.04, 6.0)	1m 5s
builds (ubuntu-22.04, 6.0)	24m 49s
builds (ubuntu-24.04, 6.0)	20m 15s
toolchain-setup (ubuntu-22.04, nightly-6.2)	1m 27s
builds (macos-13, 6.1)	2m 3s
builds (ubuntu-22.04, nightly-6.2)	21m 49s
builds (ubuntu-24.04, nightly-6.2)	20m 23s
builds (macos-15, nightly-6.2)	3m 10s
builds (macos-15, 6.1)	2m 22s
toolchain-setup (macos-13, nightly-6.2)	2m 6s
builds (ubuntu-22.04, 6.1)	20m 18s
builds (macos-13, nightly-6.2)	2m 31s
toolchain-setup (ubuntu-22.04, 6.1)	58s
toolchain-setup (macos-13, 6.0)	2m 13s
builds (macos-15, 6.0)	2m 15s
builds (macos-13, 6.0)	20m 53s
	2h 59m 17s

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