fix pom version reference (#11435)

diff --git a/extensions-core/mysql-metadata-storage/pom.xml b/extensions-core/mysql-metadata-storage/pom.xml
index 0795507..cd7a775 100644
--- a/extensions-core/mysql-metadata-storage/pom.xml
+++ b/extensions-core/mysql-metadata-storage/pom.xml
@@ -112,7 +112,7 @@
         <dependency>
             <groupId>org.apache.druid</groupId>
             <artifactId>druid-processing</artifactId>
-            <version>${parent.version}</version>
+            <version>${project.parent.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/extensions-core/postgresql-metadata-storage/pom.xml b/extensions-core/postgresql-metadata-storage/pom.xml
index b5ddcce..5617169 100644
--- a/extensions-core/postgresql-metadata-storage/pom.xml
+++ b/extensions-core/postgresql-metadata-storage/pom.xml
@@ -111,7 +111,7 @@
         <dependency>
             <groupId>org.apache.druid</groupId>
             <artifactId>druid-processing</artifactId>
-            <version>${parent.version}</version>
+            <version>${project.parent.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>