Bumps `itextpdf_version` from 7.2.5 to 9.0.0.

Updates `com.itextpdf:kernel` from 7.2.5 to 9.0.0

Updates `com.itextpdf:layout` from 7.2.5 to 9.0.0

Updates `com.itextpdf:io` from 7.2.5 to 9.0.0

---
updated-dependencies:
- dependency-name: com.itextpdf:kernel
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: com.itextpdf:layout
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: com.itextpdf:io
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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