Switch presubmit CI workflows to use pinned IREE versions. #1887

Job	Run time
Unit Tests (ubuntu-24.04, 3.11, 2.3.0)	1m 36s
Unit Tests (ubuntu-24.04, 3.11, 2.3.0)	1m 36s
Unit Tests (ubuntu-24.04, 3.11, 2.4.1)	1m 34s
Unit Tests (ubuntu-24.04, 3.11, 2.4.1)	1m 34s
Unit Tests (ubuntu-24.04, 3.11, 2.5.1)	1m 49s
Unit Tests (ubuntu-24.04, 3.11, 2.5.1)	1m 49s
Unit Tests (ubuntu-24.04, 3.12, 2.4.1)	1m 44s
Unit Tests (ubuntu-24.04, 3.12, 2.4.1)	1m 44s
Unit Tests (ubuntu-24.04, 3.12, 2.5.1)	1m 49s
Unit Tests (ubuntu-24.04, 3.12, 2.5.1)	1m 49s
Unit Tests (windows-2022, 3.11, 2.3.0)	1m 45s
Unit Tests (windows-2022, 3.11, 2.3.0)	3m 38s
Unit Tests (windows-2022, 3.12, 2.4.1)	1m 2s
Unit Tests (windows-2022, 3.12, 2.4.1)	4m 1s
Data-dependent Tests (3.11, llama-mi300x-3)	4m 42s
Data-dependent Tests (3.11, llama-mi300x-3)	4m 13s
Model Integration Tests	8m 52s
Model Integration Tests	8m 52s
ci_sharktank_summary	1s
ci_sharktank_summary	1s
	54m 11s

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