Reduce size of Label--inline (#1908)

* Reduce size of `Label--inline`

* Create moody-apricots-bake.md

Author: simurai

.changeset/moody-apricots-bake.md

@@ -0,0 +1,5 @@
+---
+"@primer/css": patch
+---
+
+Reduce size of `Label--inline`

src/labels/mixins.scss

@@ -27,6 +27,6 @@
 
 @mixin labels--inline {
   display: inline;
-  padding: 0.1667em 0.5em;
-  font-size: 0.9em;
+  padding: 0.12em 0.5em;
+  font-size: 85%;
 }