Upgrade Fluent UI v8 (#688)

Co-authored-by: Steve Faulkner <southpolesteve@gmail.com>

package.json

@@ -11,6 +11,7 @@
     "@azure/ms-rest-nodeauth": "3.0.7",
     "@babel/plugin-proposal-class-properties": "7.12.1",
     "@babel/plugin-proposal-decorators": "7.12.12",
+    "@fluentui/react": "8.10.1",
     "@jupyterlab/services": "6.0.2",
     "@jupyterlab/terminal": "3.0.3",
     "@microsoft/applicationinsights-web": "2.6.1",
@@ -43,8 +44,6 @@
     "@types/mkdirp": "1.0.1",
     "@types/node-fetch": "2.5.7",
     "@uifabric/react-cards": "0.109.110",
-    "@uifabric/react-hooks": "7.14.0",
-    "@uifabric/styling": "7.13.7",
     "applicationinsights": "1.8.0",
     "bootstrap": "3.4.1",
     "canvas": "file:./canvas",
@@ -77,7 +76,6 @@
     "monaco-editor": "0.18.1",
     "ms": "2.1.3",
     "msal": "1.4.4",
-    "office-ui-fabric-react": "7.164.2",
     "p-retry": "4.2.0",
     "plotly.js-cartesian-dist-min": "1.52.3",
     "post-robot": "10.0.42",