Add missing peer dependency tslib (#8161)

cspell.json

@@ -343,6 +343,7 @@
         "TSAs",
         "tsep",
         "TSJS",
+        "tslib",
         "typeahead",
         "typecasted",
         "typecheck",

package.json

@@ -73,6 +73,7 @@
     "semver": "7.3.2",
     "srcset": "2.0.1",
     "string-width": "4.2.0",
+    "tslib": "1.11.1",
     "typescript": "3.8.3",
     "unicode-regex": "3.0.0",
     "unified": "9.0.0",

yarn.lock

@@ -7570,10 +7570,10 @@ trough@^1.0.0:
   resolved "https://registry.yarnpkg.com/trough/-/trough-1.0.4.tgz#3b52b1f13924f460c3fbfd0df69b587dbcbc762e"
   integrity sha512-tdzBRDGWcI1OpPVmChbdSKhvSVurznZ8X36AYURAcl+0o2ldlCY2XPzyXNNxwJwwyIU+rIglTCG4kxtNKBQH7Q==
 
-tslib@^1.10.0, tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
-  integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
+tslib@1.11.1, tslib@^1.10.0, tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
+  version "1.11.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
+  integrity sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==
 
 tsutils@^3.17.1:
   version "3.17.1"