Bump tslib from 2.3.0 to 2.3.1 (#735)

Bumps [tslib](https://github.com/Microsoft/tslib) from 2.3.0 to 2.3.1.
- [Release notes](https://github.com/Microsoft/tslib/releases)
- [Commits](microsoft/tslib@2.3.0...2.3.1)

---
updated-dependencies:
- dependency-name: tslib
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -23,7 +23,7 @@
     "core-js": "^3.16.1",
     "rxjs": "^7.3.0",
     "shepherd.js": "^8.3.1",
-    "tslib": "^2.3.0",
+    "tslib": "^2.3.1",
     "zone.js": "~0.11.4"
   },
   "devDependencies": {
@@ -47,7 +47,7 @@
     "protractor": "~7.0.0",
     "ts-node": "~10.2.0",
     "tsickle": "^0.43.0",
-    "tslib": "^2.3.0",
+    "tslib": "^2.3.1",
     "tslint": "^6.1.3",
     "typescript": "~4.3.5"
   },