Update base image to python-3.11.3 #315

Job	Run time
build-amd64 / linux/amd64	3m 31s
test-amd64 (base-with-services) / base-with-services	2m 2s
test-amd64 (base) / base	1m 50s
test-amd64 (full-stack) / full-stack	2m 3s
test-amd64 (lab) / lab	1m 59s
build / linux/amd64,linux/arm64	13m 3s
test-arm64	0s
publish-ghcr / release (base)	7s
publish-ghcr / release (base-with-services)	12s
publish-ghcr / release (lab)	5s
publish-ghcr / release (full-stack)	7s
Integration tests (ubuntu-22.04, true) / ubuntu-22.04	2m 39s
publish-dockerhub	0s
make-release	0s
	27m 38s

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