test: Prevent removal of coverage dir in npm test

The additional build for e2e tests did remove the previously generated
coverage report.

package.json

@@ -28,12 +28,13 @@
 	"type": "module",
 	"types": "lib/index.d.ts",
 	"scripts": {
-		"build": "npm run cleanup && tsc -p tsconfig.build.json",
+		"build": "npm run clean-lib && tsc -p tsconfig.build.json",
 		"build-test": "tsc --noEmit -p .",
-		"build-watch": "npm run cleanup && tsc -w -p tsconfig.build.json",
+		"build-watch": "npm run clean-lib && tsc -w -p tsconfig.build.json",
 		"check-licenses": "licensee --errors-only",
-		"cleanup": "rimraf lib coverage",
-		"coverage": "nyc ava --node-arguments=\"--experimental-loader=@istanbuljs/esm-loader-hook\"",
+		"clean-coverage": "rimraf coverage",
+		"clean-lib": "rimraf lib",
+		"coverage": "npm run clean-coverage && nyc ava --node-arguments=\"--experimental-loader=@istanbuljs/esm-loader-hook\"",
 		"depcheck": "depcheck --ignores @commitlint/config-conventional,@istanbuljs/esm-loader-hook,rimraf,sap,mycomp,@ui5/linter",
 		"hooks:pre-push": "npm run lint:commit",
 		"lint": "eslint .",