Drop the dirty suffix in version number

[dims]

some of the operations may end up with ./hack/print-workspace-status.sh returning version with -dirty in it, indicating that an extra modification to one of the files is present or the git workspace is not pristine enough (extra file?). just ignore those for now. (see example below)

[40915:40912 - 0:2038] 09:02:34 [davanum@c889f3bd53ed:o +1] ~/go/src/k8s.io/kubernetes
$ touch a.txt
[40915:40912 - 0:2039] 03:27:00 [davanum@c889f3bd53ed:o +1] ~/go/src/k8s.io/kubernetes
$ hack/print-workspace-status.sh
STABLE_BUILD_GIT_COMMIT f4041204c0029374be6949164c6f184e27408f7e
STABLE_BUILD_SCM_STATUS dirty
STABLE_BUILD_SCM_REVISION v1.29.0-alpha.0.40+f4041204c00293-dirty
STABLE_BUILD_MAJOR_VERSION 1
STABLE_BUILD_MINOR_VERSION 29+
STABLE_DOCKER_TAG v1.29.0-alpha.0.40_f4041204c00293-dirty
STABLE_DOCKER_REGISTRY registry.k8s.io
STABLE_DOCKER_PUSH_REGISTRY staging-k8s.gcr.io
gitCommit f4041204c0029374be6949164c6f184e27408f7e
gitTreeState dirty
gitVersion v1.29.0-alpha.0.40+f4041204c00293-dirty
gitMajor 1
gitMinor 29+
buildDate 2023-08-08T19:27:05Z

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[dims]

testing in kubernetes/kubernetes#119835