[GHA] Uplift Linux IGC Dev RT version to igc-dev-15caa46 #7280

Job	Run time
detect_changes / Decide which tests could be affected by the changes	5s
build / Build + LIT	5m 2s
Decide which Arc tests to run	5s
test-perf	0s
test (AMD/HIP, ["Linux", "amdgpu"], ghcr.io/intel/llvm/ubuntu2204_build:latest-0300ac924620a51f76... / AMD/HIP	11m 40s
test (E2E tests on Intel Arc A-Series Graphics, ["Linux", "arc"], ghcr.io/intel/llvm/ubuntu2204_i... / E2E tests on Intel Arc A-Series Graphics	8m 24s
test (E2E tests with dev igc on Intel Arc A-Series Graphics, ["Linux", "arc"], ghcr.io/intel/llvm... / E2E tests with dev igc on Intel Arc A-Series Graphics	9m 34s
test (Intel, ["Linux", "gen12"], ghcr.io/intel/llvm/ubuntu2204_intel_drivers:latest, -u 1001 --de... / Intel	44m 35s
test (NVIDIA/CUDA, ["Linux", "cuda"], ghcr.io/intel/llvm/ubuntu2204_build:latest, -u 1001 --gpus ... / NVIDIA/CUDA	29m 52s
	1h 49m 17s

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