[MRESOLVER-523] Update GPG generator BC to 1.78 (apache#460)

Update BC to 1.78

---

https://issues.apache.org/jira/browse/MRESOLVER-523

Author: cstamas

maven-resolver-generator-gnupg/pom.xml

@@ -36,7 +36,7 @@
     <Bundle-SymbolicName>${Automatic-Module-Name}</Bundle-SymbolicName>
 
     <javaVersion>17</javaVersion>
-    <bouncycastleVersion>1.77</bouncycastleVersion>
+    <bouncycastleVersion>1.78</bouncycastleVersion>
   </properties>
 
   <dependencies>
@@ -79,6 +79,11 @@
       <artifactId>bcprov-jdk18on</artifactId>
       <version>${bouncycastleVersion}</version>
     </dependency>
+    <dependency>
+      <groupId>org.bouncycastle</groupId>
+      <artifactId>bcutil-jdk18on</artifactId>
+      <version>${bouncycastleVersion}</version>
+    </dependency>
 
     <dependency>
       <groupId>org.junit.jupiter</groupId>