docs: Update release signing key.

The release artifacts are now signed by Efraim, not Ludo.

* doc/guix-cookbook.texi: Switch gpg url to codeberg, mention Efraim's key.
* doc/guix.texi: Likewise.

Change-Id: Iae667796b6978cdd4a44f73990da7b9599ab509c
Fixes: #5946
Signed-off-by: Rutherther <rutherther@ditigal.xyz>
Merges: #6213

doc/guix-cookbook.texi

@@ -2930,8 +2930,8 @@ your Linode Summary section.) Now you can run the "install guix from
 
 @example
 sudo apt-get install gpg
-wget https://sv.gnu.org/people/viewgpg.php?user_id=15145 -qO - | gpg --import -
-wget https://git.savannah.gnu.org/cgit/guix.git/plain/etc/guix-install.sh
+wget https://codeberg.org/efraim.gpg -qO - | gpg --import -
+wget https://guix.gnu.org/guix-install.sh
 chmod +x guix-install.sh
 ./guix-install.sh
 guix pull
@@ -3110,7 +3110,7 @@ Now you can run the "install guix from @pxref{Binary Installation,,,
 guix, GNU Guix}" steps:
 
 @example
-wget https://git.savannah.gnu.org/cgit/guix.git/plain/etc/guix-install.sh
+wget https://guix.gnu.org/guix-install.sh
 chmod +x guix-install.sh
 ./guix-install.sh
 guix pull

doc/guix.texi

@@ -10,8 +10,8 @@
 @include version.texi
 
 @c Identifier of the OpenPGP key used to sign tarballs and such.
-@set OPENPGP-SIGNING-KEY-ID 3CE464558A84FDC69DB40CFB090B11993D9AEBB5
-@set OPENPGP-SIGNING-KEY-URL https://sv.gnu.org/people/viewgpg.php?user_id=15145
+@set OPENPGP-SIGNING-KEY-ID A28BF40C3E551372662D14F741AAE7DCCA3D8351
+@set OPENPGP-SIGNING-KEY-URL https://codeberg.org/efraim.gpg
 
 @c Base URL for downloads.
 @set BASE-URL https://ftpmirror.gnu.org/gnu/guix

gnu/packages/package-management.scm

@@ -197,8 +197,8 @@
   ;; Latest version of Guix, which may or may not correspond to a release.
   ;; Note: the 'update-guix-package.scm' script expects this definition to
   ;; start precisely like this.
-  (let ((version "1.5.0rc1")
-        (commit "2d4ed08662714ea46cfe0b41ca195d1ef845fd1b")
+  (let ((version "1.5.0")
+        (commit "230aa373f315f247852ee07dff34146e9b480aec")
         (revision 0))
     (package
       (name "guix")
@@ -215,7 +215,7 @@
                       (commit commit)))
                 (sha256
                  (base32
-                  "0z1ixlkzsaj978nh57179871xkzbf8zsf10xkcfs2647iznkx7az"))
+                  "00398yxjhq9pa03knkjjrih4vc4n5xg9xjykiscndr4c84qhj3zy"))
                 (file-name (string-append "guix-" version "-checkout"))))
       (build-system gnu-build-system)
       (arguments