Bump jss from 9.4.0 to 9.8.7

Bumps [jss](https://github.com/cssinjs/jss) from 9.4.0 to 9.8.7.
- [Release notes](https://github.com/cssinjs/jss/releases)
- [Changelog](https://github.com/cssinjs/jss/blob/v9.8.7/changelog.md)
- [Commits](cssinjs/jss@v9.4.0...v9.8.7)

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

Author: dependabot-support

package.json

@@ -56,7 +56,7 @@
     "inflector-js": "1.0.1",
     "invert-color": "2.0.0",
     "json-schema": "0.2.3",
-    "jss": "9.4.0",
+    "jss": "9.8.7",
     "react": "16.7.0",
     "react-dom": "16.7.0",
     "react-json-view": "1.19.1",

yarn.lock

@@ -4567,15 +4567,7 @@ jss-vendor-prefixer@^7.0.0:
   dependencies:
     css-vendor "^0.3.8"
 
-jss@9.4.0:
-  version "9.4.0"
-  resolved "https://registry.yarnpkg.com/jss/-/jss-9.4.0.tgz#fbfd1a63556c5afd5bfcffd98df3c50eb2614ed3"
-  dependencies:
-    is-in-browser "^1.1.3"
-    symbol-observable "^1.1.0"
-    warning "^3.0.0"
-
-jss@^9.8.7:
+jss@9.8.7, jss@^9.8.7:
   version "9.8.7"
   resolved "https://registry.yarnpkg.com/jss/-/jss-9.8.7.tgz#ed9763fc0f2f0260fc8260dac657af61e622ce05"
   integrity sha512-awj3XRZYxbrmmrx9LUSj5pXSUfm12m8xzi/VKeqI1ZwWBtQ0kVPTs3vYs32t4rFw83CgFDukA8wKzOE9sMQnoQ==