Update default OCR2.Automation.GasLimit to 5.4M #42953

Job	Run time
Build and Lint integration-tests	2m 11s
Check Paths That Require Tests To Run	18s
Enforce CTF Version	6s
Get Solana Sha From Go Mod	20s
Compare/Build Automation Test List	7s
Build Chainlink Image	2m 1s
Build Test Image	0s
Check If Solana Test Image Exists	7s
Get ProjectSerum Version	6s
Solana Build Artifacts	53s
Solana Build Test Image	2s
ETH Smoke Tests ${{ matrix.product.name }}	1s
ETH Smoke Tests ${{ matrix.product.name }}	1s
ETH Smoke Tests ${{ matrix.product.name }}${{ matrix.product.tag_suffix }}	1s
Version Migration Tests	1s
Solana Smoke Tests	1s
ETH Smoke Tests	5s
Clean up integration environment deployments	36s
ETH Smoke Tests Go Mod Cache	1s
	6m 58s

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