Update dependency rvben/rumdl to v0.2.18

Author: renovate[bot]

build-images/telescopium-lint.Dockerfile

@@ -4,6 +4,6 @@ FROM ghcr.io/code0-tech/build-images/mise:428.1
 ARG LYCHEE_VERSION=lychee-v0.24.2
 
 # renovate: datasource=github-releases depName=rvben/rumdl versioning=regex:^v(?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)$
-ARG RUMDL_VERSION=v0.2.16
+ARG RUMDL_VERSION=v0.2.18
 
 RUN mise use -g lychee@$LYCHEE_VERSION rumdl@$RUMDL_VERSION