Update test dependencies

package.json

@@ -48,12 +48,12 @@
     "@types/mocha": "^10.0.1",
     "@types/node": "^16.18.27",
     "@types/proxyquire": "^1.3.28",
-    "@types/sinon": "^10.0.14",
+    "@types/sinon": "^10.0.15",
     "@types/sinon-chai": "^3.2.9",
     "@types/supertest": "^2.0.12",
     "@voxpelli/eslint-config": "^16.0.4",
     "@voxpelli/tsconfig": "^7.0.0",
-    "c8": "^7.13.0",
+    "c8": "^7.14.0",
     "chai": "^4.3.7",
     "chai-as-promised": "^7.1.1",
     "cookie-signature": "^1.2.1",
@@ -79,7 +79,7 @@
     "npm-run-all2": "^6.0.5",
     "pg-promise": "^11.4.3",
     "proxyquire": "^2.1.3",
-    "sinon": "^15.0.4",
+    "sinon": "^15.1.0",
     "sinon-chai": "^3.7.0",
     "supertest": "^6.3.3",
     "type-coverage": "^2.25.3",