Revert "deps: update arrow.version to v18.2.0 (googleapis#3675)"

This reverts commit 5a555e5.

Author: PhongChuong

java-shared-dependencies/third-party-dependencies/pom.xml

@@ -40,7 +40,7 @@
     <opentelemetry-grpc-instrumentation.version>2.1.0-alpha</opentelemetry-grpc-instrumentation.version>
     <opentelemetry-semconv.version>1.29.0-alpha</opentelemetry-semconv.version>
     <flogger.version>0.8</flogger.version>
-    <arrow.version>18.2.0</arrow.version>
+    <arrow.version>15.0.2</arrow.version>
     <dev.cel.version>0.6.0</dev.cel.version>
     <com.google.crypto.tink.version>1.16.0</com.google.crypto.tink.version>
   </properties>