chore(deps): bump @angular/core from 20.3.16 to 20.3.18

Bumps [@angular/core](https://github.com/angular/angular/tree/HEAD/packages/core) from 20.3.16 to 20.3.18.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/main/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/v20.3.18/packages/core)

---
updated-dependencies:
- dependency-name: "@angular/core"
  dependency-version: 20.3.18
  dependency-type: direct:production
...

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

Author: dependabot[bot]

examples/fdc3-chart-and-grid/js-datagrid/package.json

@@ -14,7 +14,7 @@
     "@angular/cdk": "21.1.5",
     "@angular/common": "21.1.5",
     "@angular/compiler": "21.1.5",
-    "@angular/core": "21.1.5",
+    "@angular/core": "20.3.18",
     "@angular/flex-layout": "^15.0.0-beta.42",
     "@angular/forms": "21.1.5",
     "@angular/material": "21.1.5",

examples/fdc3-trade-simulator/js-order-book/package.json

@@ -13,7 +13,7 @@
     "@angular/animations": "21.1.5",
     "@angular/common": "^21.1.5",
     "@angular/compiler": "^21.1.5",
-    "@angular/core": "^21.1.5",
+    "@angular/core": "^20.3.18",
     "@angular/forms": "^21.1.5",
     "@angular/material": "21.1.5",
     "@angular/platform-browser": "^21.1.5",

examples/fdc3-trade-simulator/js-trader-app/package.json

@@ -14,7 +14,7 @@
     "@angular/cdk": "^21.1.5",
     "@angular/common": "^21.1.5",
     "@angular/compiler": "^21.1.5",
-    "@angular/core": "^21.1.5",
+    "@angular/core": "^20.3.18",
     "@angular/forms": "^21.1.5",
     "@angular/material": "21.1.5",
     "@angular/platform-browser": "^21.1.5",

examples/js-chart-and-grid-messagerouter/js-datagrid/package.json

@@ -14,7 +14,7 @@
     "@angular/cdk": "21.1.5",
     "@angular/common": "21.1.5",
     "@angular/compiler": "21.1.5",
-    "@angular/core": "21.1.5",
+    "@angular/core": "20.3.18",
     "@angular/flex-layout": "^15.0.0-beta.42",
     "@angular/forms": "21.1.5",
     "@angular/material": "21.1.5",