How to hide version information of unbound?

Issue

• I would like to hide version information of unbound for the query from the client like below.

# dig @localhost chaos txt version.bind

; <<>> DiG 9.11.20-RedHat-9.11.20-5.el8_3.1 <<>> @localhost chaos txt version.bind
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52429
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;version.bind.          CH  TXT

;; ANSWER SECTION:
version.bind.       0   CH  TXT "unbound 1.7.3"   <<<===

;; Query time: 0 msec
;; SERVER: ::1#53(::1)
;; WHEN: Thu Dec 08 13:40:01 JST 2022
;; MSG SIZE  rcvd: 67