Bump hadoop-common from 2.10.1 to 3.2.4 in /flume-parent

Bumps hadoop-common from 2.10.1 to 3.2.4.

---
updated-dependencies:
- dependency-name: org.apache.hadoop:hadoop-common
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

flume-parent/pom.xml

@@ -73,7 +73,7 @@ limitations under the License.
     <gson.version>2.9.1</gson.version>
     <guava.version>18.0</guava.version>
     <guava-old.version>11.0.2</guava-old.version>
-    <hadoop.version>2.10.1</hadoop.version>
+    <hadoop.version>3.2.4</hadoop.version>
     <hbase.version>1.7.1</hbase.version>
     <hbase2.version>2.4.11</hbase2.version>
     <hive.version>1.2.2</hive.version>