update icon: firebase (original, original-wordmark, plain, plain-wordmark, line, line-wordmark) (#2083)

* update icon firebase

* Update wordmark to stacked version

* Adjust colors accordingly to official icons

* Firebase color change to Amber

---------

Co-authored-by: Josélio de S. C. Júnior <76992016+lunatic-fox@users.noreply.github.com>
Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>

Author: 3 people

devicon.json

@@ -3181,15 +3181,21 @@
         ],
         "versions": {
             "svg": [
+                "original",
+                "original-wordmark",
                 "plain",
-                "plain-wordmark"
+                "plain-wordmark",
+                "line",
+                "line-wordmark"
             ],
             "font": [
                 "plain",
-                "plain-wordmark"
+                "plain-wordmark",
+                "line",
+                "line-wordmark"
             ]
         },
-        "color": "#f58220",
+        "color": "#ffa000",
         "aliases": []
     },
     {