Add opam camlzip dep to opam

1.08 is the earliest version with documentation at https://ocaml.org/p/camlzip, and it seems to have all the necessary functions.

bot-components.opam

@@ -23,6 +23,7 @@ depends: [
  "x509" {>= "0.11.2"}
  "cstruct" {>= "5.0.0"}
  "ISO8601" {>= "0.2.0"}
+ "camlzip" {>= "1.08"}
  "odoc" {>= "1.5.2" & with-doc}
 ]
 build: [