docs: Update changelog version

Author: cbaker6

CHANGELOG.md

@@ -5,7 +5,7 @@
 [Full Changelog](https://github.com/netreconlab/Parse-Swift/compare/5.7.3...main), [Documentation](https://swiftpackageindex.com/netreconlab/Parse-Swift/main/documentation/parseswift)
 * _Contributing to this repo? Add info about your change here to be included in the next release_
 
-### 5.7.2
+### 5.7.3
 [Full Changelog](https://github.com/netreconlab/Parse-Swift/compare/5.7.2...5.7.3), [Documentation](https://swiftpackageindex.com/netreconlab/Parse-Swift/5.7.3/documentation/parseswift)
 
 __Fixes__