chore(deps): update dependency sinon to v21 (#915)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -41,7 +41,7 @@
     "jest": "29.7.0",
     "prettier": "3.6.2",
     "semantic-release": "24.2.6",
-    "sinon": "20.0.0",
+    "sinon": "21.0.0",
     "ts-jest": "29.4.0",
     "typescript": "5.8.3"
   },