fix: Match both `yaml` and `yml` in all managers (#22416)

lib/modules/manager/batect/index.ts

lib/modules/manager/circleci/index.ts

lib/modules/manager/flux/common.ts

lib/modules/manager/gitlabci-include/index.ts

lib/modules/manager/gitlabci/index.ts

lib/modules/manager/helm-requirements/index.ts

lib/modules/manager/helm-values/index.ts

lib/modules/manager/helmfile/index.ts

lib/modules/manager/helmv3/index.ts

lib/modules/manager/pre-commit/index.ts

lib/modules/manager/travis/index.ts