Bump decode-uri-component from 0.2.0 to 0.2.2

Bumps [decode-uri-component](https://github.com/SamVerschueren/decode-uri-component) from 0.2.0 to 0.2.2.
- [Release notes](https://github.com/SamVerschueren/decode-uri-component/releases)
- [Commits](https://github.com/SamVerschueren/decode-uri-component/compare/v0.2.0...v0.2.2)

---
updated-dependencies:
- dependency-name: decode-uri-component
  dependency-type: indirect
...

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

package.json

@@ -16,7 +16,7 @@
     "prismjs": "^1.23.0",
     "redis": "^3.0.2",
     "rss": "^1.2.2",
-    "showdown": "^2.0.0"
+    "showdown": "^1.9.1"
   },
   "devDependencies": {
     "coveralls": "^3.0.4",