Bump version to 2.57.0-dev #3884

Job	Run time
Prepare supported CodeQL environment matrix	6s
Run Guideline Recategorization tests	16s
Run release tests	21s
Run analysis report tests (2.21.4, codeql-cli/v2.21.4, codeql-bundle-v2.21.4)	6m 39s
	7m 22s

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