fix: pom.xml to reduce vulnerabilities
fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMBEUST-174815
- https://snyk.io/vuln/SNYK-JAVA-COMMONSBEANUTILS-460111
- https://snyk.io/vuln/SNYK-JAVA-JUNIT-1017047
- https://snyk.io/vuln/SNYK-JAVA-ORGCODEHAUSPLEXUS-31521
- https://snyk.io/vuln/SNYK-JAVA-ORGCODEHAUSPLEXUS-31522
- https://snyk.io/vuln/SNYK-JAVA-ORGCODEHAUSPLEXUS-461102
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORKSECURITY-1078232
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORKSECURITY-174111
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORKSECURITY-450242
- https://snyk.io/vuln/SNYK-JAVA-ORGSPRINGFRAMEWORKSECURITY-570204
- https://snyk.io/vuln/SNYK-JAVA-ORGTESTNG-174823
- https://snyk.io/vuln/SNYK-JAVA-ORGYAML-537645
ssherwood/jsf-primefaces-demo,ssherwood/jsf-primefaces-demo