Bump Angular SDK version in angular-ts template (#5139)

# Description of Changes
- Bump Angular to ^21.2.12 in angular-ts template + sdk devDeps

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# API and ABI breaking changes

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# Expected complexity level and risk
1

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# Testing

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---------

Co-authored-by: Tyler Cloutier <cloutiertyler@users.noreply.github.com>

Author: clockwork-tien

crates/bindings-typescript/package.json

@@ -214,8 +214,8 @@
     }
   },
   "devDependencies": {
-    "@angular/compiler": "^21.1.0",
-    "@angular/core": "^21.1.0",
+    "@angular/compiler": "^21.2.12",
+    "@angular/core": "^21.2.12",
     "@eslint/js": "^9.17.0",
     "@size-limit/file": "^11.2.0",
     "@tanstack/react-query": "^5.90.19",