In a solution I had 2 SPF'x web parts and 3 SPF'x Extensions. I need to upgrade the web part to SPF'x 1.6.0. So I have updated my package.json references to 1.6.0. Then I had ran the "npm install" command. Once I done both these, it throws the below error.
...\node_modules\@microsoft\sp-build-web\node_modules\@m icrosoft\node-core-library\lib\JsonSchema.js:178 throw new Error(prefix + os.EOL + ^
Error: JSON validation failed: D:\Bloom\Code\BloomWebparts\config\tslint.json
Error: #/ (Defines configuration options for the...) Additional properties not allowed: lintConfig,useDefaultConfigAsBase,remo veExistingRules,displayAsWarning at validateObjectWithCallback".
Am I missing anything? What is the proper way to upgrade the solution to SPF'x 1.6.0?