Remove fedora 40 and use dnf inplace of dnf5

Author: tobiasdiez

.github/workflows/ci.yml

@@ -17,7 +17,6 @@ jobs:
       fail-fast: false
       matrix:
         container:
-          - fedora:40
           - fedora:41
           - fedora:42
     container:
@@ -42,19 +41,14 @@ jobs:
 
       - name: Install dependencies
         run: |
-          # Install dnf5
-          if [ "${{ matrix.container }}" = "fedora:40" ] && ! rpm -q dnf5 >/dev/null; then
-              dnf install dnf5 -y
-          fi
-
           SYSTEM=$(build/bin/sage-guess-package-system)
           if [ "$SYSTEM" = "fedora" ]; then
               # Need to use --setopt=tsflags="" to avoid errors with gphelp
-              dnf5 install -y pari-gp --setopt=tsflags=""
+              dnf install -y pari-gp --setopt=tsflags=""
 
               # Mitigate upstream packaging bug: https://bugzilla.redhat.com/show_bug.cgi?id=2332429
               # by swapping the incorrectly installed OpenCL-ICD-Loader for the expected ocl-icd
-              dnf5 -y swap --repo='fedora' OpenCL-ICD-Loader ocl-icd
+              dnf -y swap --repo='fedora' OpenCL-ICD-Loader ocl-icd
           fi
 
           eval $(build/bin/sage-print-system-package-command $SYSTEM update)

build/bin/sage-print-system-package-command

@@ -154,7 +154,7 @@ case $system:$command in
     @(fedora*|redhat*|centos*):install)
         [ "$YES" = yes ] && options="$options -y"
         [ "$IGNORE_MISSING" = yes ] && options="$options --skip-unavailable"
-        [ -n "$system_packages" ] && print_shell_command ${SUDO}dnf5 install $options $system_packages
+        [ -n "$system_packages" ] && print_shell_command ${SUDO}dnf install $options $system_packages
         ;;
     gentoo*:install)
         [ -n "$system_packages" ] && print_shell_command ${SUDO}emerge $system_packages