ci: use the latest version of Trivy for security scans #896

Job	Run time
Prepare build matrix	9s
Build Docker image (ref: 6.6.2, tag: 6.6)	13m 55s
Build Docker image (ref: 6.5.5, tag: 6.5)	4m 45s
Build Docker image (ref: 6.4.5, tag: 6.4)	12m 51s
Build Docker image (ref: 6.3.5, tag: 6.3)	8m 47s
Build Docker image (ref: 6.2.6, tag: 6.2)	9m 9s
Build Docker image (ref: 6.1.7, tag: 6.1)	8m 51s
Build Docker image (ref: 6.0.9, tag: 6.0)	13m 34s
Build Docker image (ref: HEAD, tag: trunk)	11m 47s
	1h 23m 48s

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