Bump codemirror from 5.44.0 to 5.45.0 in /frontend

Bumps [codemirror](https://github.com/codemirror/CodeMirror) from 5.44.0 to 5.45.0.
- [Release notes](https://github.com/codemirror/CodeMirror/releases)
- [Changelog](https://github.com/codemirror/CodeMirror/blob/master/CHANGELOG.md)
- [Commits](codemirror/codemirror5@5.44.0...5.45.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

frontend/package.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "abortcontroller-polyfill": "^1.2.9",
     "bootstrap": "3",
-    "codemirror": "^5.44.0",
+    "codemirror": "^5.45.0",
     "nanoid": "^2.0.1",
     "prop-types": "^15.7.2",
     "react": "^16.8.3",

frontend/yarn.lock

@@ -2000,10 +2000,10 @@ code-point-at@^1.0.0:
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
-codemirror@^5.44.0:
-  version "5.44.0"
-  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.44.0.tgz#80dc2a231eeb7aab25ec2405cdca37e693ccf9cc"
-  integrity sha512-3l42syTNakCdCQuYeZJXTyxina6Y9i4V0ighSJXNCQtRbaCN76smKKLu1ZHPHQon3rnzC7l4i/0r4gp809K1wg==
+codemirror@^5.45.0:
+  version "5.45.0"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.45.0.tgz#db5ebbb3bf44028c684053f3954d011efcec27ad"
+  integrity sha512-c19j644usCE8gQaXa0jqn2B/HN9MnB2u6qPIrrhrMkB+QAP42y8G4QnTwuwbVSoUS1jEl7JU9HZMGhCDL0nsAw==
 
 collection-visit@^1.0.0:
   version "1.0.0"