Update yarn.lock

frontend/yarn.lock

@@ -2308,6 +2308,17 @@
   dependencies:
     "@babel/runtime" "^7.4.4"
 
+"@material-ui/lab@4.0.0-alpha.45":
+  version "4.0.0-alpha.45"
+  resolved "https://registry.npmjs.org/@material-ui/lab/-/lab-4.0.0-alpha.45.tgz#6e1abbdd6e44b9ef7b3eff8ef892a3da5dc52f10"
+  integrity sha512-zT6kUU87SHsPukiu3tlWg8V6o0tGS38c1b/xst/kPqX6eLbfqrROyxhHn1A8ZtHmqga1AKQdv/1llQoG80Afww==
+  dependencies:
+    "@babel/runtime" "^7.4.4"
+    "@material-ui/utils" "^4.7.1"
+    clsx "^1.0.4"
+    prop-types "^15.7.2"
+    react-is "^16.8.0"
+
 "@material-ui/styles@^4.9.0":
   version "4.9.0"
   resolved "https://registry.npmjs.org/@material-ui/styles/-/styles-4.9.0.tgz#10c31859f6868cfa9d3adf6b6c3e32c9d676bc76"
@@ -5057,7 +5068,7 @@ clone@^1.0.2:
   resolved "https://registry.npmjs.org/clone/-/clone-1.0.4.tgz#da309cc263df15994c688ca902179ca3c7cd7c7e"
   integrity sha1-2jCcwmPfFZlMaIypAheco8fNfH4=
 
-clsx@^1.0.2:
+clsx@^1.0.2, clsx@^1.0.4:
   version "1.1.0"
   resolved "https://registry.npmjs.org/clsx/-/clsx-1.1.0.tgz#62937c6adfea771247c34b54d320fb99624f5702"
   integrity sha512-3avwM37fSK5oP6M5rQ9CNe99lwxhXDOeSWVPAOYF6OazUTgZCMb0yWlJpmdD74REy1gkEaFiub2ULv4fq9GUhA==