Bump com.github.librepdf:openpdf from 1.3.43 to 2.0.3

Bumps [com.github.librepdf:openpdf](https://github.com/LibrePDF/OpenPDF) from 1.3.43 to 2.0.3.
- [Release notes](https://github.com/LibrePDF/OpenPDF/releases)
- [Commits](LibrePDF/OpenPDF@1.3.43...2.0.3)

---
updated-dependencies:
- dependency-name: com.github.librepdf:openpdf
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

showcase/pom.xml

@@ -159,7 +159,7 @@
         <dependency>
             <groupId>com.github.librepdf</groupId>
             <artifactId>openpdf</artifactId>
-            <version>1.3.43</version>
+            <version>2.0.3</version>
         </dependency>
         <!-- Sanitizing Converter -->
         <dependency>