Bump markdown-serve from 0.3.3 to 0.8.0 (#79)

Bumps [markdown-serve](https://github.com/lyphtec/markdown-serve) from 0.3.3 to 0.8.0.
- [Release notes](https://github.com/lyphtec/markdown-serve/releases)
- [Commits](https://github.com/lyphtec/markdown-serve/commits/v0.8.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -61,7 +61,7 @@
     "jws": "^3.1.0",
     "ldapjs": "^1.0.0",
     "lodash": "^4.14.2",
-    "markdown-serve": "^0.3.2",
+    "markdown-serve": "^0.8.0",
     "mime": "^1.3.4",
     "@devicefarmer/minicap-prebuilt": "^2.4.0",
     "minimatch": "^3.0.3",