chore(deps): Bump actions/attest-sbom from 1.1.2 to 1.2.0 in /.github/actions/build-docker-image #768

Job	Run time
Prepare build matrix	3s
Build Docker image (ref: 6.5.3, tag: 6.5)	1m 19s
Build Docker image (ref: 6.4.4, tag: 6.4)	58s
Build Docker image (ref: 6.3.4, tag: 6.3)	1m 19s
Build Docker image (ref: 6.2.5, tag: 6.2)	1m 15s
Build Docker image (ref: 6.1.6, tag: 6.1)	1m 20s
Build Docker image (ref: 6.0.8, tag: 6.0)	55s
Build Docker image (ref: HEAD, tag: trunk)	3m 34s
	10m 43s

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