dns: add missing dns keywords to schema.json v5

[hadiqaalamdar]

Feature #5642

• [x] I have read the contributing guide lines at https://docs.suricata.io/en/latest/devguide/codebase/contributing/contribution-process.html
• [x] I have signed the Open Information Security Foundation contribution agreement at https://suricata.io/about/contribution-agreement/
• [x] I have updated the user guide (in doc/userguide/) to reflect the changes made (if applicable)

Link to redmine ticket: https://redmine.openinfosecfoundation.org/issues/5642

Previous PR: https://github.com/OISF/suricata/pull/10429

Describe changes:

• Added tc boolean field to dns object in schema.json file
• Added sshfp field in dns.answers and dns.grouped in schema.json
• Added description for these fields as suggested in the last PR
• Made suggested changes from last PR
• SV tests are passing:

===> dns/dns-sshfp: OK

PASSED:  1
FAILED:  0
SKIPPED: 0

SV_BRANCH=https://github.com/OISF/suricata-verify/pull/1588