add scheduled workflow for weekly image build #3756

Job	Run time
code-quality (3.10)	3m 21s
build-docs (3.10)	1m 54s
test / rust	24s
containerbuild / containerbuild (3.10)	3m 22s
containerbuild / containerbuild (3.11)	4m 48s
test / python (3.10, unit)	2m 34s
containerbuild / containerbuild (3.12)	3m 9s
test / python (3.10, acceptance)	2m 9s
test / python (3.11, unit)	2m 10s
test / python (3.11, acceptance)	1m 50s
test / python (3.12, unit)	2m 24s
test / python (3.12, acceptance)	2m 1s
	30m 6s

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