Bump itextpdf.version from 9.6.0 to 9.7.0

Bumps `itextpdf.version` from 9.6.0 to 9.7.0.

Updates `com.itextpdf:kernel` from 9.6.0 to 9.7.0

Updates `com.itextpdf:itext-core` from 9.6.0 to 9.7.0
- [Release notes](https://github.com/itext/itext7/releases)
- [Commits](itext/itext-java@9.6.0...9.7.0)

Updates `com.itextpdf:layout` from 9.6.0 to 9.7.0

---
updated-dependencies:
- dependency-name: com.itextpdf:kernel
  dependency-version: 9.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.itextpdf:itext-core
  dependency-version: 9.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.itextpdf:layout
  dependency-version: 9.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -82,7 +82,7 @@
         <geotools.version>35.0</geotools.version>
         <jdbc-util.version>21.0</jdbc-util.version>
         <jts.version>1.20.0</jts.version>
-        <itextpdf.version>9.6.0</itextpdf.version>
+        <itextpdf.version>9.7.0</itextpdf.version>
         <postgresql.jdbc.version>42.7.13</postgresql.jdbc.version>
         <postgresql.postgis-jdbc.version>2025.1.1</postgresql.postgis-jdbc.version>
         <oracle.jdbc.version>23.26.2.0.0</oracle.jdbc.version>