Ignore updates to express 5.x (#468)

Taken from this example:
https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/controlling-dependencies-updated#specifying-the-semantic-versioning-level-to-ignore

---------

Co-authored-by: Stefan Henke <stefan.henke@sap.com>

Author: mofterdinger

.github/dependabot.yml

@@ -27,6 +27,10 @@ updates:
       all-npm-dependencies:
         patterns: 
         - "*"
+    ignore:
+      - dependency-name: "express"
+        # For Express, ignore all updates for version 5 becaue @sap/cds requires express version 4
+        versions: ["5.x"]
   - package-ecosystem: github-actions
     directory: "/"
     schedule: