Bump prismjs from 1.20.0 to 1.21.0 in /kotsadm/web

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.20.0 to 1.21.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.20.0...v1.21.0)

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

kotsadm/web/package.json

@@ -139,7 +139,7 @@
     "moment": "^2.24.0",
     "monaco-editor": "0.14.3",
     "monaco-editor-webpack-plugin": "^1.5.4",
-    "prismjs": "1.20.0",
+    "prismjs": "1.21.0",
     "query-string": "6.13.1",
     "randomstring": "^1.1.5",
     "rc-progress": "^2.5.2",

kotsadm/web/yarn.lock

@@ -13483,10 +13483,10 @@ prettyjson@^1.2.1:
     colors "^1.1.2"
     minimist "^1.2.0"
 
-prismjs@1.20.0:
-  version "1.20.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.20.0.tgz#9b685fc480a3514ee7198eac6a3bf5024319ff03"
-  integrity sha512-AEDjSrVNkynnw6A+B1DsFkd6AVdTnp+/WoUixFRULlCLZVRZlVQMVWio/16jv7G1FscUxQxOQhWwApgbnxr6kQ==
+prismjs@1.21.0:
+  version "1.21.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.21.0.tgz#36c086ec36b45319ec4218ee164c110f9fc015a3"
+  integrity sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==
   optionalDependencies:
     clipboard "^2.0.0"