[MGPG-123][MGPG-124] Dependency upgrades (#93)

Upgrade:
* Bouncycastle to 1.78
* junixsocket to 2.9.1

---

https://issues.apache.org/jira/browse/MGPG-123
https://issues.apache.org/jira/browse/MGPG-124

pgp-keys-map.list

@@ -20,8 +20,7 @@ com.kohlschutter.junixsocket:junixsocket-core = 0xB5C082F1158B8C92AE3E5E1C29B8FE
 com.kohlschutter.junixsocket:junixsocket-native-common = 0xB5C082F1158B8C92AE3E5E1C29B8FEA02804261C
 commons-io:commons-io = 0x2DB4F1EF0FA761ECC4EA935C86FDC7E2A11262CB
 org.apiguardian:apiguardian-api = 0xFF6E2C001948C5F2F38B0CC385911F425EC61B51
-org.bouncycastle:bcpg-jdk18on = 0x7B121B76A7ED6CE6E60AD51784E913A8E3A748C0
-org.bouncycastle:bcprov-jdk18on = 0x7B121B76A7ED6CE6E60AD51784E913A8E3A748C0
+org.bouncycastle = 0x7B121B76A7ED6CE6E60AD51784E913A8E3A748C0
 org.junit.jupiter:junit-jupiter-api = 0xFF6E2C001948C5F2F38B0CC385911F425EC61B51
 org.junit.jupiter:junit-jupiter-params = 0xFF6E2C001948C5F2F38B0CC385911F425EC61B51
 org.junit.platform:junit-platform-commons = 0xFF6E2C001948C5F2F38B0CC385911F425EC61B51

pom.xml

@@ -63,7 +63,7 @@ under the License.
     <javaVersion>8</javaVersion>
     <mavenVersion>3.9.6</mavenVersion>
     <resolverVersion>1.9.18</resolverVersion>
-    <bouncycastleVersion>1.77</bouncycastleVersion>
+    <bouncycastleVersion>1.78</bouncycastleVersion>
     <project.build.outputTimestamp>2024-03-23T21:55:20Z</project.build.outputTimestamp>
     <resource.delimiter>@</resource.delimiter>
   </properties>
@@ -150,10 +150,15 @@ under the License.
       <artifactId>bcprov-jdk18on</artifactId>
       <version>${bouncycastleVersion}</version>
     </dependency>
+    <dependency>
+      <groupId>org.bouncycastle</groupId>
+      <artifactId>bcutil-jdk18on</artifactId>
+      <version>${bouncycastleVersion}</version>
+    </dependency>
     <dependency>
       <groupId>com.kohlschutter.junixsocket</groupId>
       <artifactId>junixsocket-core</artifactId>
-      <version>2.9.0</version>
+      <version>2.9.1</version>
       <type>pom</type>
     </dependency>
     <!-- These two below must go in pair -->