docs: add Major Releases section to Manage Releases #14179

Job	Run time
Test Types of eslint	57s
Verify Files	2m 52s
Browser Test	2m 14s
Test Types of @eslint/js	53s
Test Types of eslint-config-eslint	1m 5s
Test (ubuntu-latest, 20.19.0)	3m 19s
Test (ubuntu-latest, 24.x)	3m 12s
Test (ubuntu-latest, 22.x)	3m 13s
Test (windows-latest, lts/*)	4m 27s
Test (macOS-latest, lts/*)	4m 30s
Test (ubuntu-latest, 20.x)	3m 22s
Test (ubuntu-latest, 25.x)	3m 16s
Test (ubuntu-latest, 24.x, --experimental-transform-types)	3m 13s
Test pnpm Type Support	15s
	36m 48s

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