fix: update tempest/markdown to 1.3.0 (#117)

Author: aidan-casey

composer.json

@@ -11,7 +11,7 @@
         "spatie/yaml-front-matter": "^2.1.1",
         "spatie/browsershot": "^5.2.0",
         "assertchris/ellison": "^1.0.2",
-        "tempest/markdown": "^1.2.2",
+        "tempest/markdown": "^1.3.0",
         "ext-gd": "*"
     },
     "require-dev": {