chore(main): release 0.12.1-SNAPSHOT (#328) #1422

Job	Run time
mavenverify	2m 35s
platform-integration	5m 39s
platform-xtest / resolve-versions	11s
Validate PR title	0s
platform-xtest / xct (v0.13.0, go)	13m 55s
platform-xtest / xct (main, go)	15m 44s
platform-xtest / xct (v0.13.0, js)	14m 51s
platform-xtest / xct (v0.13.0, java)	26m 57s
platform-xtest / xct (main, js)	16m 41s
platform-xtest / xct (main, java)	27m 32s
platform-xtest / publish-results	5s
platform-xtest / xtest	3s
ci	3s
	2h 4m 16s

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