Update dependency com.ibm.icu:icu4j to v78 (#3763)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

flink-table/flink-table-common/pom.xml

@@ -54,7 +54,7 @@ under the License.
 		<dependency>
 			<groupId>com.ibm.icu</groupId>
 			<artifactId>icu4j</artifactId>
-			<version>77.1</version>
+			<version>78.1</version>
 		</dependency>
 
 		<dependency>