fix: upgrade org.bouncycastle:bcpg-jdk15to18 from 1.68 to 1.79

Snyk has created this PR to upgrade org.bouncycastle:bcpg-jdk15to18 from 1.68 to 1.79.

See this package in maven:
org.bouncycastle:bcpg-jdk15to18

See this project in Snyk:
https://app.snyk.io/org/monica-a-nbcu/project/d54a1aff-3220-4a84-9b95-f41931947701?utm_source=github&utm_medium=referral&page=upgrade-pr

ci/images/releasescripts/pom.xml

@@ -7,7 +7,7 @@
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
 		<version>2.2.4.RELEASE</version>
-		<relativePath /> <!-- lookup parent from repository -->
+		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>io.spring.concourse.releasescripts</groupId>
 	<artifactId>release-scripts</artifactId>
@@ -22,7 +22,7 @@
 		<dependency>
 			<groupId>org.bouncycastle</groupId>
 			<artifactId>bcpg-jdk15to18</artifactId>
-			<version>1.68</version>
+			<version>1.79</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>