Bump tinymce from 5.10.0 to 5.10.7 in /frontend (#1090)

Bumps [tinymce](https://github.com/tinymce/tinymce/tree/HEAD/modules/tinymce) from 5.10.0 to 5.10.7.
- [Release notes](https://github.com/tinymce/tinymce/releases)
- [Changelog](https://github.com/tinymce/tinymce/blob/5.10.7/modules/tinymce/CHANGELOG.md)
- [Commits](https://github.com/tinymce/tinymce/commits/5.10.7/modules/tinymce)

---
updated-dependencies:
- dependency-name: tinymce
  dependency-type: direct:production
...

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/package.json

@@ -19,7 +19,7 @@
     "indent.js": "^0.3.5",
     "qs": "^6.10.1",
     "textversionjs": "^1.1.3",
-    "tinymce": "^5.10.0",
+    "tinymce": "^5.10.7",
     "turndown": "^7.0.0",
     "vue": "^2.6.12",
     "vue-i18n": "^8.22.2",

frontend/yarn.lock

@@ -9481,10 +9481,10 @@ timsort@^0.3.0:
   resolved "https://registry.yarnpkg.com/timsort/-/timsort-0.3.0.tgz#405411a8e7e6339fe64db9a234de11dc31e02bd4"
   integrity sha1-QFQRqOfmM5/mTbmiNN4R3DHgK9Q=
 
-tinymce@^5.10.0:
-  version "5.10.0"
-  resolved "https://registry.yarnpkg.com/tinymce/-/tinymce-5.10.0.tgz#5f88b40c2b26dc72b126f7d04944014dcb1ace05"
-  integrity sha512-SaqBK8GtTKYSsTfhKdN0+NrZRgmVWO+j3fvgzLjt0t/g0osNzRH5os8icm2Rv5HvaeTd4TpxetUuLE+R9yg/yg==
+tinymce@^5.10.7:
+  version "5.10.7"
+  resolved "https://registry.yarnpkg.com/tinymce/-/tinymce-5.10.7.tgz#d89d446f1962f2a1df6b2b70018ce475ec7ffb80"
+  integrity sha512-9UUjaO0R7FxcFo0oxnd1lMs7H+D0Eh+dDVo5hKbVe1a+VB0nit97vOqlinj+YwgoBDt6/DSCUoWqAYlLI8BLYA==
 
 tmp@^0.0.33:
   version "0.0.33"