chore(k8s/paperless): update gotenberg/gotenberg docker tag to v9 #11

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renovate wants to merge 1 commits from renovate/gotenberg-gotenberg-9.x into master
@@ -21,7 +21,7 @@ spec:
type: RuntimeDefault
containers:
- name: gotenberg
image: gotenberg/gotenberg:8
image: gotenberg/gotenberg:9
command:
- gotenberg
- --chromium-disable-javascript=true