Fix antora setup.

pom.xml

@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-commons-parent</artifactId>
-		<version>4.1.4-SNAPSHOT</version>
+		<version>4.1.5-SNAPSHOT</version>
 	</parent>
 
 	<name>Spring Cloud Commons Docs Build</name>
@@ -35,4 +35,21 @@
 			</plugin>
 		</plugins>
 	</build>
+
+	<repositories>
+		<repository>
+			<id>spring-snapshot</id>
+			<url>https://repo.spring.io/snapshot</url>
+			<snapshots>
+				<enabled>true</enabled>
+			</snapshots>
+			<releases>
+				<enabled>false</enabled>
+			</releases>
+		</repository>
+		<repository>
+			<id>spring-milestone</id>
+			<url>https://repo.spring.io/milestone</url>
+		</repository>
+	</repositories>
 </project>