[release/v1.55.x] Prepare release 1.55.0 (#7752)

otelbot[bot] · web-flow · commit f6124230c27a · 2025-10-13T10:57:50.000-07:00
Co-authored-by: otelbot &lt;197425009+otelbot@users.noreply.github.com&gt;
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## Version 1.55.0 (2025-10-13)
 
 ### API
 
diff --git a/version.gradle.kts b/version.gradle.kts
@@ -1,4 +1,4 @@
-val snapshot = true
+val snapshot = false
 
 allprojects {
   var ver = "1.55.0"
