fix: module/module-pdf/pom.xml to reduce vulnerabilities
fix: module/module-pdf/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGBOUNCYCASTLE-32369
- https://snyk.io/vuln/SNYK-JAVA-ORGBOUNCYCASTLE-32412

docbleach/DocBleach,docbleach/DocBleach