Merge pull request #10095 from Icinga/el7

GHA: drop EOL EL7

.github/workflows/linux.bash

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -exo pipefail
 
-export PATH="/usr/lib/ccache:/usr/lib64/ccache:/opt/rh/devtoolset-11/root/usr/bin:$PATH"
+export PATH="/usr/lib/ccache:/usr/lib64/ccache:$PATH"
 export CCACHE_DIR=/icinga2/ccache
 export CTEST_OUTPUT_ON_FAILURE=1
 CMAKE_OPTS=''
@@ -33,16 +33,6 @@ case "$DISTRO" in
       {boost,libedit,mariadb1\*,ncurses,openssl,postgresql,systemd}-devel
     ;;
 
-  centos:*)
-    yum install -y centos-release-scl epel-release
-    yum install -y bison ccache cmake3 devtoolset-11-gcc-c++ flex ninja-build \
-      {boost169,libedit,mariadb,ncurses,openssl,postgresql,systemd}-devel
-
-    ln -vs /usr/bin/cmake3 /usr/local/bin/cmake
-    ln -vs /usr/bin/ccache /usr/lib64/ccache/g++
-    CMAKE_OPTS='-DBOOST_INCLUDEDIR=/usr/include/boost169 -DBOOST_LIBRARYDIR=/usr/lib64/boost169'
-    ;;
-
   debian:*|ubuntu:*)
     apt-get update
     DEBIAN_FRONTEND=noninteractive apt-get install --no-install-{recommends,suggests} -y bison \

.github/workflows/linux.yml

@@ -23,7 +23,6 @@ jobs:
         distro:
           - amazonlinux:2
           - amazonlinux:2023
-          - centos:7 # and RHEL 7
           - debian:11 # and Raspbian 11
           - debian:12 # and Raspbian 12
           - fedora:37