chore: disable cache completely for download-maven-plugin usages

Author: whowes

java-showcase/gapic-showcase/pom.xml

@@ -68,9 +68,7 @@
                 https://raw.githubusercontent.com/googleapis/gapic-showcase/v${gapic-showcase.version}/server/services/compliance_suite.json
               </url>
               <outputDirectory>src/test/resources</outputDirectory>
-              <cacheDirectory>
-                ${project.build.directory}/download-cache
-              </cacheDirectory>
+              <skipCache>true</skipCache>
               <!-- Set this to always download the latest version and overwrite the existing file -->
               <overwrite>true</overwrite>
             </configuration>

sdk-platform-java/gapic-generator-java/pom.xml

@@ -126,9 +126,7 @@
         <artifactId>download-maven-plugin</artifactId>
         <version>1.6.8</version>
         <configuration>
-          <cacheDirectory>
-            ${project.build.directory}/download-cache
-          </cacheDirectory>
+          <skipCache>true</skipCache>
         </configuration>
         <executions>
           <execution>

sdk-platform-java/java-showcase-3.21.0/gapic-showcase/pom.xml

@@ -60,9 +60,7 @@
                 https://raw.githubusercontent.com/googleapis/gapic-showcase/v${gapic-showcase.version}/server/services/compliance_suite.json
               </url>
               <outputDirectory>src/test/resources</outputDirectory>
-              <cacheDirectory>
-                ${project.build.directory}/download-cache
-              </cacheDirectory>
+              <skipCache>true</skipCache>
               <!-- Set this to always download the latest version and overwrite the existing file -->
               <overwrite>true</overwrite>
             </configuration>

sdk-platform-java/java-showcase-3.25.8/gapic-showcase/pom.xml

@@ -68,9 +68,7 @@
                 https://raw.githubusercontent.com/googleapis/gapic-showcase/v${gapic-showcase.version}/server/services/compliance_suite.json
               </url>
               <outputDirectory>src/test/resources</outputDirectory>
-              <cacheDirectory>
-                ${project.build.directory}/download-cache
-              </cacheDirectory>
+              <skipCache>true</skipCache>
               <!-- Set this to always download the latest version and overwrite the existing file -->
               <overwrite>true</overwrite>
             </configuration>