Require @cap2ui5/cds-plugin ^0.4.0 and let Dependabot watch it

.github/dependabot.yml

@@ -0,0 +1,26 @@
+# Monthly, grouped. The dependency that matters is @cap2ui5/cds-plugin: while
+# the plugin is 0.x a minor may change how apps are written and break the
+# samples here, and this repository has no lockfile - an install gets the
+# newest plugin the range allows. A bump has to show up here as a pull request
+# that runs the tests, so a plugin release that breaks a sample is a red pull
+# request, not a broken `npm install` for somebody trying the samples.
+version: 2
+updates:
+  - package-ecosystem: npm
+    directory: /
+    schedule:
+      interval: monthly
+    open-pull-requests-limit: 5
+    groups:
+      cap2ui5:
+        patterns: ["@cap2ui5/*"]
+      dependencies:
+        patterns: ["*"]
+        exclude-patterns: ["@cap2ui5/*"]
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: monthly
+    groups:
+      actions:
+        patterns: ["*"]

package.json

@@ -30,12 +30,12 @@
   },
   "dependencies": {
     "@cap-js/sqlite": "^3",
-    "@cap2ui5/cds-plugin": "^0.3.1",
+    "@cap2ui5/cds-plugin": "^0.4.0",
     "@sap/cds": "^10",
     "@sap/cds-rfc": "^2.2.1"
   },
   "devDependencies": {
-    "@abap2ui5/linter": "^0.8.3",
+    "@abap2ui5/linter": "^0.8.5",
     "@cap-js/cds-test": "^1.0.2",
     "eslint": "^10",
     "fast-xml-parser": "^5.11.1"