Java: Add change note.

Author: aschackmull

change-notes/1.22/analysis-java.md

@@ -6,6 +6,7 @@
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 | Equals method does not inspect argument type (`java/unchecked-cast-in-equals`) | Fewer false positive and more true positive results | Precision has been improved by doing a bit of inter-procedural analysis and relying less on ad-hoc method names. |
 | Uncontrolled data in arithmetic expression (`java/uncontrolled-arithmetic`) | Fewer false positive results | Precision has been improved in several ways, in particular, by better detection of guards along the data-flow path. |
+| Uncontrolled data used in path expression (`java/path-injection`) | Fewer false positive results | The query no longer reports results guarded by `!var.contains("..")`. |
 | User-controlled data in arithmetic expression (`java/tainted-arithmetic`) | Fewer false positive results | Precision has been improved in several ways, in particular, by better detection of guards along the data-flow path. |
 
 ## Changes to QL libraries