chore(deps): bump com.itextpdf:itext-core from 8.0.5 to 9.4.0 in /apps/backend (#306)

* chore(deps): bump com.itextpdf:itext-core in /apps/backend

Bumps [com.itextpdf:itext-core](https://github.com/itext/itext7) from 8.0.5 to 9.4.0.
- [Release notes](https://github.com/itext/itext7/releases)
- [Commits](itext/itext-java@8.0.5...9.4.0)

---
updated-dependencies:
- dependency-name: com.itextpdf:itext-core
  dependency-version: 9.4.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* fix: update html2pdf to 6.0.0 for itext-core 9.x compatibility

itext-core 9.x requires html2pdf 6.x for proper compatibility.
Updated from 5.0.5 to 6.0.0 to resolve NoClassDefFoundError issues.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: MohsinHashmi-DataInn <108420505+MohsinHashmi-DataInn@users.noreply.github.com>
Co-authored-by: MohsinHashmi-DataInn <mohsin@datainn.io>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: 3 people

apps/backend/pom.xml

@@ -287,13 +287,13 @@
 		<dependency>
 			<groupId>com.itextpdf</groupId>
 			<artifactId>itext-core</artifactId>
-			<version>8.0.5</version>
+			<version>9.4.0</version>
 			<type>pom</type>
 		</dependency>
 		<dependency>
 			<groupId>com.itextpdf</groupId>
 			<artifactId>html2pdf</artifactId>
-			<version>5.0.5</version>
+			<version>6.0.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.codehaus.janino</groupId>