security/kanidm: Fix build with rust 1.89.0

error: hiding a lifetime that's elided elsewhere is confusing
  --> rust-sshkeys-d736693769b9c4abebad8050fba92271f3c50226/src/reader.rs:24:48
   |
24 |     pub fn new<T: ?Sized + AsRef<[u8]>>(inner: &T) -> Reader {
   |                                                ^^     ------ the same lifetime is hidden here
   |                                                |
   |                                                the lifetime is elided here
   |
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing

PR:		288923
Approved by:	portmgr (build fix blanket)