upgrade sinon, don't exclude it from dependabot anymore

package.json

@@ -115,6 +115,7 @@
     "minimist": "^1.2.8",
     "name-suggestion-index": "~6.0",
     "netlify-cli": "^21.5.0",
+    "nise": "^6.1.1",
     "npm-run-all": "^4.0.0",
     "osm-community-index": "~5.9.2",
     "postcss": "^8.5.4",
@@ -122,7 +123,7 @@
     "serve-handler": "^6.1.6",
     "shelljs": "^0.10.0",
     "shx": "^0.4.0",
-    "sinon": "^11.1.2",
+    "sinon": "^20.0.0",
     "sinon-chai": "^4.0.0",
     "smash": "0.0",
     "svg-sprite": "2.0.4",