Revert "Update version to 1.48.0-SNAPSHOT" (#1970)

Author: trask

CHANGELOG.md

@@ -2,8 +2,6 @@
 
 ## Unreleased
 
-## Version 1.47.0 (2025-05-19)
-
 ### GCP authentication extension
 
 - Update the internal implementation such that the required headers are retrieved

version.gradle.kts

@@ -1,5 +1,5 @@
-val stableVersion = "1.48.0-SNAPSHOT"
-val alphaVersion = "1.48.0-alpha-SNAPSHOT"
+val stableVersion = "1.47.0-SNAPSHOT"
+val alphaVersion = "1.47.0-alpha-SNAPSHOT"
 
 allprojects {
   if (findProperty("otel.stable") != "true") {