Bump tslint from 5.20.1 to 6.0.0 (#2442)

* Bump tslint from 5.20.1 to 6.0.0

Bumps [tslint](https://github.com/palantir/tslint) from 5.20.1 to 6.0.0.
- [Release notes](https://github.com/palantir/tslint/releases)
- [Changelog](https://github.com/palantir/tslint/blob/master/CHANGELOG.md)
- [Commits](palantir/tslint@5.20.1...6.0.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

* required tslint change

Co-authored-by: Tyler James Leonhardt <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -64,7 +64,7 @@
     "mock-fs": "~4.10.4",
     "rewire": "~4.0.1",
     "sinon": "~8.1.1",
-    "tslint": "~5.20.1",
+    "tslint": "~6.0.0",
     "typescript": "~3.5.3",
     "vsce": "~1.64.0",
     "vscode-test": "~1.3.0"

package.json

@@ -116,7 +116,7 @@ export class Logger implements ILogger {
 
     public async writeAndShowErrorWithActions(
         message: string,
-        actions: Array<{ prompt: string; action: () => Promise<void> }>) {
+        actions: { prompt: string; action: () => Promise<void> }[]) {
         this.writeError(message);
 
         const fullActions = [