chore: bump otel version to 1.59.0

PiperOrigin-RevId: 876103916

Author: tilgalas

pom.xml

@@ -44,7 +44,7 @@
 
     <auto-value.version>1.11.1</auto-value.version>
     <spring-boot.version>3.4.1</spring-boot.version>
-    <otel.version>1.49.0</otel.version>
+    <otel.version>1.59.0</otel.version>
     <mcp.version>0.14.0</mcp.version>
     <errorprone.version>2.47.0</errorprone.version>
     <google.genai.version>1.32.0</google.genai.version>