Prevent multiple versions of BouncyCastle on the classpath

pom.xml

@@ -58,6 +58,13 @@
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-translate</artifactId>
       <version>2.1.13</version>
+      <exclusions>
+        <exclusion>
+          <!-- as BC changed the artifact id, we can't rely on Maven to resolve version conflicts -->
+          <groupId>org.bouncycastle</groupId>
+          <artifactId>*</artifactId>
+        </exclusion>
+      </exclusions>
     </dependency>
     <dependency>
       <groupId>com.datadoghq</groupId>
@@ -423,6 +430,29 @@
           </compilerArgs>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <version>3.0.0</version>
+        <executions>
+          <execution>
+            <id>default-cli</id>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <bannedDependencies>
+                  <excludes>
+                    <exclude>org.bouncycastle:bc*-jdk15on*</exclude>
+                    <exclude>org.bouncycastle:bc*-jdk15to18</exclude>
+                  </excludes>
+                </bannedDependencies>
+              </rules>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-assembly-plugin</artifactId>