MUI: upgrade Lab to latest release

package.json

@@ -6,7 +6,7 @@
     "@date-io/moment": "^1.x",
     "@material-ui/core": "^4.7.0",
     "@material-ui/icons": "^4.5.1",
-    "@material-ui/lab": "^4.0.0-alpha.33",
+    "@material-ui/lab": "^4.0.0-alpha.47",
     "@material-ui/pickers": "^3.2.10",
     "@material-ui/styles": "^4.6.0",
     "etesync": "^0.3.1",

yarn.lock

@@ -1807,15 +1807,16 @@
   dependencies:
     "@babel/runtime" "^7.4.4"
 
-"@material-ui/lab@^4.0.0-alpha.33":
-  version "4.0.0-alpha.33"
-  resolved "https://registry.yarnpkg.com/@material-ui/lab/-/lab-4.0.0-alpha.33.tgz#3de96da1e813afcea5a07d56e54ec41cfa636e2c"
-  integrity sha512-+xttHUZLwH4+yfkB7B5A3pNDtQO27tGftuUxMRDMevNXwQtAB7mgYco34JwMr9kmvESYmacoZReOacJ6rxym/Q==
+"@material-ui/lab@^4.0.0-alpha.47":
+  version "4.0.0-alpha.47"
+  resolved "https://registry.yarnpkg.com/@material-ui/lab/-/lab-4.0.0-alpha.47.tgz#757a336e4c2496f700a392ff41e25a7d460a387b"
+  integrity sha512-+WC3O0M/769D3nO9Rqupusc+lob7tQMe5/DnOjAhZ0bpXlJbhZb7N84WkEk4JgQLj6ydP8e9Jhqd1lG+mGj+xw==
   dependencies:
     "@babel/runtime" "^7.4.4"
-    "@material-ui/utils" "^4.5.2"
+    "@material-ui/utils" "^4.9.6"
     clsx "^1.0.4"
     prop-types "^15.7.2"
+    react-is "^16.8.0"
 
 "@material-ui/pickers@^3.2.10":
   version "3.2.10"
@@ -1876,6 +1877,15 @@
     prop-types "^15.7.2"
     react-is "^16.8.6"
 
+"@material-ui/utils@^4.9.6":
+  version "4.9.6"
+  resolved "https://registry.yarnpkg.com/@material-ui/utils/-/utils-4.9.6.tgz#5f1f9f6e4df9c8b6a263293b68c94834248ff157"
+  integrity sha512-gqlBn0JPPTUZeAktn1rgMcy9Iczrr74ecx31tyZLVGdBGGzsxzM6PP6zeS7FuoLS6vG4hoZP7hWnOoHtkR0Kvw==
+  dependencies:
+    "@babel/runtime" "^7.4.4"
+    prop-types "^15.7.2"
+    react-is "^16.8.0"
+
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/@mrmlnc/readdir-enhanced/-/readdir-enhanced-2.2.1.tgz#524af240d1a360527b730475ecfa1344aa540dde"
@@ -9632,6 +9642,11 @@ react-is@^16.7.0, react-is@^16.8.4:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.11.0.tgz#b85dfecd48ad1ce469ff558a882ca8e8313928fa"
   integrity sha512-gbBVYR2p8mnriqAwWx9LbuUrShnAuSCNnuPGyc7GJrMVQtPDAh8iLpv7FRuMPFb56KkaVZIYSz1PrjI9q0QPCw==
 
+react-is@^16.8.0:
+  version "16.13.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
+  integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
+
 react-is@^16.8.1, react-is@^16.8.6, react-is@^16.9.0:
   version "16.12.0"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.12.0.tgz#2cc0fe0fba742d97fd527c42a13bec4eeb06241c"