ci(workflow): Add auto-merge notification workflow #2785

Job	Run time
Get Changes	3s
Check: 'source-pokeapi' (skip=true)	3s
Check: 'source-google-drive' (skip=true)	4s
Check: 'source-hardcoded-records' (skip=true)	4s
Check: 'source-shopify' (skip=true)	3s
Check: 'destination-motherduck' (skip=true)	5s
Check: 'source-amplitude' (skip=true)	3s
	25s

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