ci: pin debian container based on commit date #432

Job	Run time
Run tests on kas code (3.6)	1m 46s
Run tests on kas code (3.6)	1m 46s
Run tests on kas code (3.7)	1m 44s
Run tests on kas code (3.7)	1m 44s
Run tests on kas code (3.8)	1m 32s
Run tests on kas code (3.8)	1m 32s
Run tests on kas code (3.9)	1m 53s
Run tests on kas code (3.9)	1m 53s
Run tests on kas code (3.10)	1m 48s
Run tests on kas code (3.10)	1m 48s
Run tests on kas code (3.11)	1m 50s
Run tests on kas code (3.11)	1m 50s
Run tests on kas code (3.12)	1m 58s
Run tests on kas code (3.12)	1m 58s
Build, test and deploy container images (kas)	17m 37s
Build, test and deploy container images (kas)	12m 27s
Build, test and deploy container images (kas-isar)	14m 44s
Build, test and deploy container images (kas-isar)	14m 44s
	1h 24m 34s

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