Bump net.sourceforge.plantuml:plantuml from 1.2025.4 to 1.2026.0 in /app

Bumps [net.sourceforge.plantuml:plantuml](https://github.com/plantuml/plantuml) from 1.2025.4 to 1.2026.0.
- [Release notes](https://github.com/plantuml/plantuml/releases)
- [Changelog](https://github.com/plantuml/plantuml/blob/master/CHANGES.md)
- [Commits](plantuml/plantuml@v1.2025.4...v1.2026.0)

---
updated-dependencies:
- dependency-name: net.sourceforge.plantuml:plantuml
  dependency-version: 1.2026.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

app/pom.xml

@@ -53,7 +53,7 @@
 		<dependency>
 			<groupId>net.sourceforge.plantuml</groupId>
 			<artifactId>plantuml</artifactId>
-			<version>1.2025.4</version>
+			<version>1.2026.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.xmlgraphics</groupId>