Update versions

[smithgp]

Update versions of the various libraries:

• vscode to 1.60
• node to 14.16.10
• typescript to 4.4.3
• vcode-json-languageserver to 1.3.4
• vscode-languageclient to 7.0.0
• jsonc-parser to 3.0.0
• vsce to 1.100.1
• istanbul to latest istanbul-lib
• mkdirp to 1.0.4
• lerna to 4.0.0
• removing now unused webpack
• vscode-test to @vscode/test-electron 1.6.2
• ajv to 8.6.3, better-ajv-errors to 0.7.0
• shx to 0.3.3
• glob to 7.2.0
• decache to 4.6.0
• request-light to 0.5.4
• semver to 7.3.5
• tmp to 0.2.1
• sinon to 11.1.2
• mocha to 9.1.3, mocha-junit-reporter to 2.0.2, mocha-multi-reporters to 1.5.1
• vscode-json-languageservice to at least 4.1.8
• @salesforce/templates to 52.4.0

and various code fixes related to those updates, including:

• outputting es2020 javascript
• use extensionMode to additionally control telemetry
• use extension api to get package.json
• create test files as utf-8
• fixed some invalid regex's in the schemas that ajv 8.6.3 caught