new icon: apacheairflow (original, plain, original-wordmark, plain-wordmark) (devicons#1412)

* Add Apache Airflow

* Apply suggestions from code review

Co-authored-by: David Leal <halfpacho@gmail.com>

Author: 2 people

devicon.json

@@ -336,6 +336,32 @@
         "color": "#303284",
         "aliases": []
     },
+    {
+        "name": "apacheairflow",
+        "altnames": [
+            "Airflow"
+        ],
+        "tags": [
+            "platform",
+            "pipeline",
+            "orchestrator",
+            "open-source"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "original-wordmark",
+                "plain",
+                "plain-wordmark"
+            ],
+            "font": [
+                "plain",
+                "plain-wordmark"
+            ]
+        },
+        "color": "#017cee",
+        "aliases": []
+    },
     {
         "name": "apachekafka",
         "altnames": [],