Bump erusev/parsedown from 1.7.1 to 1.7.4

Bumps [erusev/parsedown](https://github.com/erusev/parsedown) from 1.7.1 to 1.7.4.
- [Release notes](https://github.com/erusev/parsedown/releases)
- [Commits](https://github.com/erusev/parsedown/compare/1.7.1...1.7.4)

---
updated-dependencies:
- dependency-name: erusev/parsedown
  dependency-type: indirect
...

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

composer.lock

@@ -57,16 +57,16 @@
         },
         {
             "name": "erusev/parsedown",
-            "version": "1.7.1",
+            "version": "1.7.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/erusev/parsedown.git",
-                "reference": "92e9c27ba0e74b8b028b111d1b6f956a15c01fc1"
+                "reference": "cb17b6477dfff935958ba01325f2e8a2bfa6dab3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/erusev/parsedown/zipball/92e9c27ba0e74b8b028b111d1b6f956a15c01fc1",
+                "url": "https://api.github.com/repos/erusev/parsedown/zipball/cb17b6477dfff935958ba01325f2e8a2bfa6dab3",
-                "reference": "92e9c27ba0e74b8b028b111d1b6f956a15c01fc1",
+                "reference": "cb17b6477dfff935958ba01325f2e8a2bfa6dab3",
                 "shasum": ""
             },
             "require": {
@@ -99,7 +99,11 @@
                 "markdown",
                 "parser"
             ],
-            "time": "2018-03-08T01:11:30+00:00"
+            "support": {
+                "issues": "https://github.com/erusev/parsedown/issues",
+                "source": "https://github.com/erusev/parsedown/tree/1.7.x"
+            },
+            "time": "2019-12-30T22:54:17+00:00"
         },
         {
             "name": "erusev/parsedown-extra",
@@ -732,5 +736,6 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.2.0"
 }