Bump the prod-deps group with 2 updates (#243)

Bumps the prod-deps group with 2 updates: [org.kiwiproject:kiwi-parent](https://github.com/kiwiproject/kiwi-parent) and [org.kiwiproject:kiwi-bom](https://github.com/kiwiproject/kiwi-bom).


Updates `org.kiwiproject:kiwi-parent` from 3.0.20 to 3.0.21
- [Release notes](https://github.com/kiwiproject/kiwi-parent/releases)
- [Commits](kiwiproject/kiwi-parent@v3.0.20...v3.0.21)

Updates `org.kiwiproject:kiwi-bom` from 2.0.18 to 2.0.19
- [Release notes](https://github.com/kiwiproject/kiwi-bom/releases)
- [Commits](kiwiproject/kiwi-bom@v2.0.18...v2.0.19)

---
updated-dependencies:
- dependency-name: org.kiwiproject:kiwi-parent
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: prod-deps
- dependency-name: org.kiwiproject:kiwi-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: prod-deps
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.kiwiproject</groupId>
         <artifactId>kiwi-parent</artifactId>
-        <version>3.0.20</version>
+        <version>3.0.21</version>
     </parent>
 
     <artifactId>retrying-again</artifactId>
@@ -30,7 +30,7 @@
 
     <properties>
 
-        <kiwi-bom.version>2.0.18</kiwi-bom.version>
+        <kiwi-bom.version>2.0.19</kiwi-bom.version>
 
         <!-- Sonar properties -->
         <sonar.projectKey>kiwiproject_retrying-again</sonar.projectKey>