chore(deps): bump modelix/mps-git-import in /helm/modelix

Bumps modelix/mps-git-import from 16.6.0 to 18.1.0.

---
updated-dependencies:
- dependency-name: modelix/mps-git-import
  dependency-version: 18.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

helm/modelix/values.yaml

@@ -17,13 +17,13 @@ oauthProxy:
 modelServer:
   image:
     repository: modelix/model-server
-    tag: "16.6.0"
+    tag: "18.1.0"
     pullPolicy: IfNotPresent
 
 gitImport:
   image:
     repository: modelix/mps-git-import
-    tag: "16.6.0"
+    tag: "18.1.0"
     pullPolicy: IfNotPresent
 
 proxy: