MINOR: Bump org.apache.commons:commons-pool2 from 2.12.0 to 2.12.1

Bumps org.apache.commons:commons-pool2 from 2.12.0 to 2.12.1.

---
updated-dependencies:
- dependency-name: org.apache.commons:commons-pool2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

flight/flight-sql/pom.xml

@@ -107,7 +107,7 @@ under the License.
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-pool2</artifactId>
-      <version>2.12.0</version>
+      <version>2.12.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>