add mariadb icons (#1769)

Co-authored-by: Josélio Júnior <76992016+lunatic-fox@users.noreply.github.com>

Author: luizcarloscf

devicon.json

@@ -5405,6 +5405,36 @@
         "color": "#f26322",
         "aliases": []
     },
+    {
+        "name": "mariadb",
+        "altnames": [],
+        "tags": [
+            "database",
+            "sql",
+            "open-source"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "original-wordmark"
+            ],
+            "font": [
+                "original",
+                "original-wordmark"
+            ]
+        },
+        "color": "#003545",
+        "aliases": [
+            {
+                "base": "original",
+                "alias": "plain"
+            },
+            {
+                "base": "original-wordmark",
+                "alias": "plain-wordmark"
+            }
+        ]
+    },
     {
         "name": "markdown",
         "altnames": [