GHA: add Amazon Linux 2023

which unfortunately seems not to have ccache. 🤷

.github/workflows/linux.bash

@@ -7,7 +7,7 @@ export CTEST_OUTPUT_ON_FAILURE=1
 CMAKE_OPTS=''
 
 case "$DISTRO" in
-  amazonlinux:*)
+  amazonlinux:2)
     amazon-linux-extras install -y epel
     yum install -y bison ccache cmake3 gcc-c++ flex ninja-build \
       {libedit,mariadb,ncurses,openssl,postgresql,systemd}-devel
@@ -28,6 +28,11 @@ case "$DISTRO" in
     export LD_LIBRARY_PATH=/boost_1_69_0/stage/lib
     ;;
 
+  amazonlinux:20*)
+    dnf install -y bison cmake flex gcc-c++ ninja-build \
+      {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 \
@@ -83,9 +88,7 @@ cmake \
   -DICINGA2_GROUP=$(id -gn) \
   $CMAKE_OPTS ..
 
-ccache -z
 ninja
-ccache -s
 
 ninja test
 ninja install

.github/workflows/linux.yml

@@ -22,6 +22,7 @@ jobs:
       matrix:
         distro:
           - amazonlinux:2
+          - amazonlinux:2023
           - centos:7 # and RHEL 7
           - debian:10
           - debian:11 # and Raspbian 11