refactor(global_defaults): drop orphan luks.urandom/verify and aur feature, bump fedora to 45

roles/global_defaults/defaults/main.yml

@@ -106,8 +106,6 @@ system_defaults:
     iter: 4000
     bits: 512
     pbkdf: "argon2id"
-    urandom: true
-    verify: true
   features:
     cis:
       enabled: false
@@ -129,10 +127,6 @@ system_defaults:
     rhel_repo:
       source: "iso" # iso|satellite|none — how RHEL systems get packages post-install
       url: ""       # Satellite/custom repo URL when source=satellite
-    aur:
-      enabled: false
-      helper: "yay"  # yay|paru
-      user: "_aur_builder"
     chroot:
       tool: "arch-chroot" # arch-chroot|chroot|systemd-nspawn
     initramfs: