configs: branch Fedora 45 from Rawhide

Rawhide is now Fedora 46.  Bump mock-core-configs version to 45.0
and require distribution-gpg-keys >= 1.121.

Fixes: #1793
Assisted-By: Claude Code

Author: praiskup

mock-core-configs/etc/mock/fedora-45-aarch64.cfg

@@ -0,0 +1,5 @@
+config_opts['releasever'] = '45'
+config_opts['target_arch'] = 'aarch64'
+config_opts['legal_host_arches'] = ('aarch64',)
+
+include('templates/fedora-branched.tpl')

mock-core-configs/etc/mock/fedora-45-aarch64.cfg

@@ -0,0 +1,5 @@
+config_opts['releasever'] = '45'
+config_opts['target_arch'] = 'i686'
+config_opts['legal_host_arches'] = ('i386', 'i586', 'i686', 'x86_64')
+
+include('templates/fedora-branched.tpl')

mock-core-configs/etc/mock/fedora-45-i386.cfg

@@ -0,0 +1,5 @@
+config_opts['releasever'] = '45'
+config_opts['target_arch'] = 'ppc64le'
+config_opts['legal_host_arches'] = ('ppc64le',)
+
+include('templates/fedora-branched.tpl')

mock-core-configs/etc/mock/fedora-45-i386.cfg

@@ -0,0 +1,5 @@
+config_opts['releasever'] = '45'
+config_opts['target_arch'] = 'riscv64'
+config_opts['legal_host_arches'] = ('riscv64',)
+
+include('templates/fedora-branched-riscv64.tpl')

mock-core-configs/etc/mock/fedora-45-ppc64le.cfg

@@ -0,0 +1,5 @@
+config_opts['releasever'] = '45'
+config_opts['target_arch'] = 's390x'
+config_opts['legal_host_arches'] = ('s390x',)
+
+include('templates/fedora-branched.tpl')