[Tests] fix npm test on windows

The version of "nyc" (v9) that is being used does not support launching binaries from node_modules/.bin on windows. As a workaround the path to tap's run.js is specified. Newer version of nyc fix this issue, however those versions drop support for older node versions that we still want to support here.

Also, the windows shell does not understand single quotes.

package.json

@@ -64,6 +64,7 @@
 		"js-yaml": "^3.14.0",
 		"npm-run-posix-or-windows": "^2.0.2",
 		"npmignore": "^0.3.0",
+		"nyc": "^10.3.2",
 		"safe-publish-latest": "^2.0.0",
 		"tap": "^8.0.1",
 		"tap-parser": "^5.4.0"
@@ -80,9 +81,10 @@
 		"prelint": "npm-run-posix-or-windows eclint",
 		"lint": "eslint --ext .js,.cjs,.mjs . bin/*",
 		"pretest": "npm run lint",
-		"test": "npm run tests-only",
+		"test": "npm-run-posix-or-windows tests-only",
 		"posttest": "aud --production",
 		"tests-only": "nyc tap 'test/*.js'",
+		"tests-only:windows": "nyc node_modules\\tap\\bin\\run.js test/*.js",
 		"test:example": "find example -name '*.js' | grep -v fail | grep -v static | xargs tap"
 	},
 	"testling": {