Bump helm.sh/helm/v3 from 3.18.4 to 3.18.5 in /tests/e2e #2118

Job	Run time
validate-csv	35s
helm-lint	7s
validate-helm-values	37s
unit tests	1m 4s
go-check	2m 28s
go-build	1m 40s
coverage	1m 37s
build-gpu-operator-amd64	2m 20s
build-gpu-operator-arm64	2m 9s
build-multi-arch-images	13s
e2e-tests-containerd	54m 27s
e2e-tests-nvidiadriver	34m 50s
release-latest-gpu-operator-image	0s
push-gpu-operator-bundle-image	0s
	1h 42m 7s

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