fix vulnerabilities #204

[irajtaghlidi]

Fixes #204

I also have another PR for management-api to fix all fixable vulnerabilities of K8ssandra 5.0.5.
k8ssandra/management-api-for-apache-cassandra#697

cdc-apache-cassandra  iraj/fix-vulnerabilities-204 ❯❯❯ grype agent-c4/build/libs/agent-c4-2.3.2-all.jar
 ✔ Vulnerability DB                [updated]
 ✔ Indexed file system                                                                                                                      agent-c4/build/libs/agent-c4-2.3.2-all.jar
 ✔ Cataloged contents                                                                                                 f207365541b3e0e359bf22f224921a7c87825f6f63e226875484483f4278b549
   ├── ✔ Packages                        [17 packages]
   ├── ✔ Executables                     [0 executables]
   ├── ✔ File digests                    [1 files]
   └── ✔ File metadata                   [1 locations]
 ✔ Scanned for vulnerabilities     [0 vulnerability matches]
   ├── by severity: 0 critical, 0 high, 0 medium, 0 low, 0 negligible
   └── by status:   0 fixed, 0 not-fixed, 0 ignored
No vulnerabilities found