Exclude root project .venv from bandit #335

Job	Run time
client (test-functional, bullseye)	4m 22s
component (export, bullseye)	41s
component (export, bookworm)	1m 21s
client (test-functional, bookworm)	5m 0s
internationalization (bullseye)	1m 19s
component (log, bullseye)	34s
client (test-integration, bullseye)	1m 29s
component (log, bookworm)	33s
internationalization (bookworm)	1m 22s
client (test-integration, bookworm)	1m 29s
component (proxy, bullseye)	33s
client (test-random, bullseye)	2m 3s
client (test-random, bookworm)	1m 58s
	22m 44s

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