Update dependency helm/chart-testing to v3.12.0 #10388

Job	Run time
Checks and variables	1m 27s
Unit Tests	39s
NJS Unit Tests	12s
Build Binary	25s
Build Plus images / build	59s
Build OSS images (nginx, linux/arm64, linux/amd64) / build	1m 19s
Build OSS images (ngf, linux/arm64, linux/amd64) / build	1m 41s
Helm Tests	0s
Conformance tests (nginx, v1.25.16, true) / Run Tests	7m 0s
Conformance tests (nginx, v1.25.16, false) / Run Tests	6m 40s
Conformance tests (nginx, v1.32.0, false) / Run Tests	6m 7s
Conformance tests (nginx, v1.32.0, true) / Run Tests	6m 40s
Conformance tests (plus, v1.25.16, false) / Run Tests	6m 47s
Conformance tests (plus, v1.25.16, true) / Run Tests	6m 52s
Conformance tests (plus, v1.32.0, false) / Run Tests	6m 12s
Conformance tests (plus, v1.32.0, true) / Run Tests	6m 45s
Functional tests (nginx, v1.25.16) / Run Tests	13m 39s
Functional tests (nginx, v1.32.0) / Run Tests	12m 20s
Functional tests (plus, v1.25.16) / Run Tests	13m 9s
Functional tests (plus, v1.32.0) / Run Tests	12m 38s
Package and Publish Helm Chart	0s
	1h 51m 31s

Provide feedback