chore(deps): update dependency sinon to v21

Author: renovate-bot

.github/scripts/package.json

@@ -16,6 +16,6 @@
     "devDependencies": {
         "@octokit/rest": "^19.0.0",
         "mocha": "^10.0.0",
-        "sinon": "^18.0.0"
+        "sinon": "^21.0.0"
     }
 }

package.json

@@ -51,7 +51,7 @@
     "@types/node": "^22.13.5",
     "@types/proxyquire": "^1.3.31",
     "@types/request": "^2.48.12",
-    "@types/sinon": "^17.0.4",
+    "@types/sinon": "^21.0.0",
     "@types/tmp": "^0.2.6",
     "c8": "^10.1.3",
     "codecov": "^3.8.3",
@@ -65,7 +65,7 @@
     "ncp": "^2.0.0",
     "nock": "^14.0.1",
     "proxyquire": "^2.1.3",
-    "sinon": "^19.0.2",
+    "sinon": "^21.0.0",
     "tmp": "^0.2.3",
     "typescript": "^5.8.2"
   }