chore(deps): update dependency google-cloud-dataproc to v5.20.0 (#12883)

* chore(deps): update dependency google-cloud-dataproc to v5.20.0

* remove failing bump, so other samples can be unblocked

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Co-authored-by: Katie McLaughlin <glasnt@google.com>

Author: renovate-bot

dataproc/snippets/requirements.txt

@@ -5,4 +5,4 @@ google-auth==2.38.0
 google-auth-httplib2==0.2.0
 google-cloud==0.34.0
 google-cloud-storage==2.9.0
-google-cloud-dataproc==5.4.3
+google-cloud-dataproc==5.20.0