fix: use correct securityContext for Alpine based helm-repository Pod #3014

Job	Run time
pre-commit	2m 1s
lint-go (api)	1m 18s
lint-gha	8s
lint-go (common)	1m 48s
unit-test	5m 45s
lint-go (.)	2m 2s
lint-test-helm	6m 45s
e2e-quick-start (Nutanix, v1.29.6) / e2e-test	14m 48s
e2e-quick-start (Docker, v1.30.5) / e2e-test	16m 43s
e2e-quick-start (Docker, v1.29.8) / e2e-test	16m 31s
e2e-quick-start (Docker, v1.31.0) / e2e-test	17m 6s
e2e-quick-start (Nutanix, v1.30.5) / e2e-test	14m 5s
e2e-self-hosted (Docker, v1.29.8) / e2e-test	28m 5s
e2e-self-hosted (Docker, v1.30.5) / e2e-test	23m 54s
e2e-self-hosted (Docker, v1.31.0) / e2e-test	23m 41s
	2h 54m 40s

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