Update dependency sinon to v21

Author: renovate[bot]

package.json

@@ -185,7 +185,7 @@
     "@types/mocha": "8.2.2",
     "@types/mock-require": "2.0.0",
     "@types/node": "14.17.3",
-    "@types/sinon": "10.0.2",
+    "@types/sinon": "21.0.1",
     "expect": "24.1.0",
     "lnfs-cli": "^2.1.0",
     "lodash": "^4.17.11",
@@ -196,7 +196,7 @@
     "parcel-bundler": "^1.12.3",
     "prettier": "2.6.0",
     "rxjs": "^6.5.2",
-    "sinon": "^7.3.2",
+    "sinon": "^21.1.1",
     "source-map-support": "^0.5.12",
     "sourcegraph": "^25.3.0",
     "ts-node": "^8.3.0",