fix: strongbox-parent/pom.xml to reduce vulnerabilities
fix: strongbox-parent/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-XERCES-30183
- https://snyk.io/vuln/SNYK-JAVA-XERCES-31497

sbespalov/strongbox,strongbox/strongbox,sbespalov/strongbox,sbespalov/strongbox,strongbox/strongbox,strongbox/strongbox,strongbox/strongbox,sbespalov/strongbox