Bump com.itextpdf:itextpdf from 5.5.12 to 5.5.13.3

Bumps [com.itextpdf:itextpdf](https://github.com/itext/itextpdf) from 5.5.12 to 5.5.13.3.
- [Release notes](https://github.com/itext/itextpdf/releases)
- [Commits](itext/itextpdf@5.5.12...5.5.13.3)

---
updated-dependencies:
- dependency-name: com.itextpdf:itextpdf
  dependency-type: direct:production
...

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

core/pom.xml

@@ -12,7 +12,7 @@
     <artifactId>pirilampo-core</artifactId>
 
     <properties>
-        <itextpdf.version>5.5.12</itextpdf.version>
+        <itextpdf.version>5.5.13.3</itextpdf.version>
     </properties>
 
     <dependencies>