Bump showdown from 2.0.2 to 2.0.3 (#986)

Bumps [showdown](https://github.com/showdownjs/showdown) from 2.0.2 to 2.0.3.
- [Release notes](https://github.com/showdownjs/showdown/releases)
- [Changelog](https://github.com/showdownjs/showdown/blob/2.0.3/CHANGELOG.md)
- [Commits](showdownjs/showdown@2.0.2...2.0.3)

---
updated-dependencies:
- dependency-name: showdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Author: dependabot[bot]

package-lock.json

@@ -24,6 +24,6 @@
     "fs-extra": "10.0.1",
     "node-fetch": "3.2.2",
     "rimraf": "3.0.2",
-    "showdown": "^2.0.2"
+    "showdown": "^2.0.3"
   }
 }