build: update tslint to latest version (#18823)

Updates tslint to the latest version that has support
for the new TypeScript 3.8 import and private identifier
syntax.

Author: devversion

package.json

@@ -152,7 +152,7 @@
     "ts-api-guardian": "^0.5.0",
     "ts-node": "^3.0.4",
     "tsickle": "0.38.1",
-    "tslint": "^6.0.0",
+    "tslint": "^6.1.0",
     "tsutils": "^3.0.0",
     "typescript": "~3.8.3",
     "typescript-3.6": "npm:typescript@~3.6.4",

yarn.lock

@@ -11506,10 +11506,10 @@ tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
   integrity sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==
 
-tslint@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/tslint/-/tslint-6.0.0.tgz#1c0148beac4779924216302f192cdaa153618310"
-  integrity sha512-9nLya8GBtlFmmFMW7oXXwoXS1NkrccqTqAtwXzdPV9e2mqSEvCki6iHL/Fbzi5oqbugshzgGPk7KBb2qNP1DSA==
+tslint@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/tslint/-/tslint-6.1.0.tgz#c6c611b8ba0eed1549bf5a59ba05a7732133d851"
+  integrity sha512-fXjYd/61vU6da04E505OZQGb2VCN2Mq3doeWcOIryuG+eqdmFUXTYVwdhnbEu2k46LNLgUYt9bI5icQze/j0bQ==
   dependencies:
     "@babel/code-frame" "^7.0.0"
     builtin-modules "^1.1.1"