new icon: bulma (plain) (#638)

Co-authored-by: Clemens Bastian <8781699+amacado@users.noreply.github.com>

Author: Thomas-Boi

devicon.json

@@ -382,6 +382,16 @@
         "color": "#59407f",
         "aliases": []
     },
+    {
+        "name": "bulma",
+        "tags": ["css", "framework"],
+        "versions": {
+          "svg": ["plain"],
+          "font": ["plain"]
+        },
+        "color": "#00d1b2",
+        "aliases": []
+  	},
     {
         "name": "bower",
         "tags": [