Add sourcetree icon (#6701)

* feat: add sourcetree icon

* fix(sourcetree): adjust precision

* updated icon

Co-authored-by: Jorge Amado Soria Ramirez <darksoul.uci@gmail.com>

_data/simple-icons.json

@@ -8834,6 +8834,12 @@
             "source": "https://about.sourcegraph.com/handbook/marketing/brand/brand_guidelines",
             "guidelines": "https://about.sourcegraph.com/handbook/marketing/brand/brand_guidelines"
         },
+        {
+            "title": "Sourcetree",
+            "hex": "0052CC",
+            "source": "https://atlassian.design/resources/logo-library",
+            "guidelines": "https://atlassian.design/foundations/logos/"
+        },
         {
             "title": "Southwest Airlines",
             "hex": "304CB2",

icons/sourcetree.svg

@@ -0,0 +1 @@
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>Sourcetree</title><path d="M11.999 0C6.756 0 2.474 4.245 2.474 9.525c0 4.21 2.769 7.792 6.572 9.047v4.764c0 .37.295.664.664.664h4.506a.661.661 0 0 0 .664-.664v-4.764c.025-.008.049-.019.074-.027v.064c3.694-1.22 6.412-4.634 6.565-8.687.005-.124.007-.25.007-.375v-.022c0-.152-.006-.304-.013-.455C21.275 4.037 17.125 0 11.999 0Zm0 6.352a3.214 3.214 0 0 1 2.664 5.005v.002A3.218 3.218 0 0 1 12 12.775a3.212 3.212 0 0 1 0-6.424z"/></svg>