fix: unable to use yarn on Windows

When you've set package manager to `yarn` on Windows, CLI is unable to create a project - it hangs during the operation. The problem is that getting the path to yarn cache returns result with `\n` at the end. This makes the `pacote` package hangs instead of just failing.
Fix this by trimming the result of `yarn cache dir` call.

Author: rosen-vladimirov

lib/yarn-package-manager.ts

@@ -96,7 +96,7 @@ export class YarnPackageManager extends BasePackageManager {
 	@exported("yarn")
 	public async getCachePath(): Promise<string> {
 		const result = await this.$childProcess.exec(`yarn cache dir`);
-		return result;
+		return result.toString().trim();
 	}
 }