Add release note for 0.0.122 with just one PR.

Author: TheBlueMatt

CHANGELOG.md

@@ -1,3 +1,15 @@
+# 0.0.122 - Apr 09, 2024 - "That Which Is Untested Is Broken"
+
+## Bug Fixes
+ * Correct deserialization of unknown future enum variants. This ensures
+   downgrades from future versions of LDK does not result in read failures or
+   corrupt reads in cases where enums are written (#2969).
+
+In total, this release features 2 files changed, 55 insertions, 20
+deletions in 3 commits from 1 author, in alphabetical order:
+ * Matt Corallo
+
+
 # 0.0.121 - Jan 22, 2024 - "Unwraps are Bad"
 
 ## Bug Fixes