fix: require at least angular 21.1.0 as peerDependency (#2758)

Versions of `@angular/cdk` lower than 21.1.0 break the build because of the missing `_VIEW_REPEATER_STRATEGY` that was removed in #2750.

Author: mhaertwig

RELEASE.md

@@ -6,6 +6,7 @@ This document describes how to create a new release of SBB Angular.
 
 ### Major release preparation
 
+- See the TODO in file `bazel-additional-stamp.mjs`
 - Update Angular packages to align with new angular major version.
 - Update ng-update schematics.
 - Update stackblitz assets.

tools/bazel-additional-stamp.mjs

@@ -50,5 +50,7 @@ function computeFrameworkPeerDependency(version) {
     );
   }
 
-  return `^${version.major}.0.0 || ^${version.major + 1}.0.0`;
+  // TODO(mhaertwig): undo this change when releasing `@sbb-esta/angular` 22
+  // return `^${version.major}.0.0 || ^${version.major + 1}.0.0`;
+  return `^${version.major}.1.0 || ^${version.major + 1}.0.0`;
 }