Bump tslint from 5.16.0 to 5.20.0

Bumps [tslint](https://github.com/palantir/tslint) from 5.16.0 to 5.20.0.
- [Release notes](https://github.com/palantir/tslint/releases)
- [Changelog](https://github.com/palantir/tslint/blob/master/CHANGELOG.md)
- [Commits](palantir/tslint@5.16.0...5.20.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -36,7 +36,7 @@
     "prettier": "^1.18.2",
     "sinon": "^7.4.2",
     "ts-jest": "^24.0.2",
-    "tslint": "^5.16.0",
+    "tslint": "^5.20.0",
     "tslint-config-airbnb": "^5.11.2",
     "typescript": "^3.4.5"
   },

yarn.lock

@@ -932,10 +932,14 @@ diff-sequences@^24.3.0:
   version "24.3.0"
   resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-24.3.0.tgz#0f20e8a1df1abddaf4d9c226680952e64118b975"
 
-diff@^3.2.0, diff@^3.5.0:
+diff@^3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
 
+diff@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.1.tgz#0c667cb467ebbb5cea7f14f135cc2dba7780a8ff"
+
 doctrine@0.7.2:
   version "0.7.2"
   resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-0.7.2.tgz#7cb860359ba3be90e040b26b729ce4bfa654c523"
@@ -1911,7 +1915,7 @@ jest@^24.8.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
 
-js-yaml@^3.13.0:
+js-yaml@^3.13.1:
   version "3.13.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
   dependencies:
@@ -3201,17 +3205,17 @@ tslint-microsoft-contrib@~5.2.1:
   dependencies:
     tsutils "^2.27.2 <2.29.0"
 
-tslint@^5.16.0:
-  version "5.16.0"
-  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.16.0.tgz#ae61f9c5a98d295b9a4f4553b1b1e831c1984d67"
+tslint@^5.20.0:
+  version "5.20.0"
+  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.20.0.tgz#fac93bfa79568a5a24e7be9cdde5e02b02d00ec1"
   dependencies:
     "@babel/code-frame" "^7.0.0"
     builtin-modules "^1.1.1"
     chalk "^2.3.0"
     commander "^2.12.1"
-    diff "^3.2.0"
+    diff "^4.0.1"
     glob "^7.1.1"
-    js-yaml "^3.13.0"
+    js-yaml "^3.13.1"
     minimatch "^3.0.4"
     mkdirp "^0.5.1"
     resolve "^1.3.2"