Add Nunjucks Icon (#7523)

* Add Nunjucks Icon

* Fix Nunjucks Icon

* Edit the Nunjucks Icon (Final)

* Fix Nunjucks Icon (1) - after request

_data/simple-icons.json

@@ -7342,6 +7342,11 @@
             "source": "https://numpy.org/press-kit/",
             "guidelines": "https://github.com/numpy/numpy/blob/main/branding/logo/logoguidelines.md"
         },
+        {
+            "title": "Nunjucks",
+            "hex": "1C4913",
+            "source": "https://github.com/mozilla/nunjucks/blob/master/docs/img/favicon.png"
+        },
         {
             "title": "Nutanix",
             "hex": "024DA1",

icons/nunjucks.svg

@@ -0,0 +1 @@
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>Nunjucks</title><path d="M0 12v12h24V0H0v12zm8.2-1.9V3h3v17.3h-3c-.7-2.5-1.4-5-2.2-7.5v7.5H3V3h3c.8 2.3 1.5 4.7 2.2 7.1zM20.9 7v11.6c0 .2-.1.7-.5 1.1-.4.4-.8.5-.9.6h-5.1c-.2 0-.7-.1-1-.5-.4-.4-.5-.9-.6-1.2v-3.8c1-.2 2-.5 3-.7v3.1h2.1V7h3zM0 24"/></svg>