Replace footloose in tests and examples with k0sproject/bootloose #8487

Job	Run time
Prepare	22s
Unit tests :: linux-amd64	8m 17s
Unit tests :: windows-amd64	20m 3s
Smoke test on armv7/arm64 (arm)	5m 47s
Smoke test on armv7/arm64 (arm64)	11m 23s
Build :: k0s :: linux-amd64 / linux-amd64	9m 37s
Build :: k0s :: windows-amd64 / windows-amd64	9m 16s
Autopilot tests :: ${{ matrix.version }}	0s
Build :: SBOM	0s
Build :: Airgap image bundle	0s
Smoke tests :: ${{ matrix.smoke-suite }}	0s
	1h 4m 45s

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