tests/lcitool: update to latest version

We need this for the riscv64 and gcc-native mappings. As the older
alpine release has been dropped from the mappings we also need to bump
the version of alpine we use.

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230630180423.558337-12-alex.bennee@linaro.org>

tests/docker/dockerfiles/alpine.docker

@@ -1,10 +1,10 @@
 # THIS FILE WAS AUTO-GENERATED
 #
-#  $ lcitool dockerfile --layers all alpine-316 qemu
+#  $ lcitool dockerfile --layers all alpine-318 qemu
 #
 # https://gitlab.com/libvirt/libvirt-ci
 
-FROM docker.io/library/alpine:3.16
+FROM docker.io/library/alpine:3.18
 
 RUN apk update && \
     apk upgrade && \

tests/lcitool/refresh

@@ -115,7 +115,7 @@ try:
     #
     # Standard native builds
     #
-    generate_dockerfile("alpine", "alpine-316")
+    generate_dockerfile("alpine", "alpine-318")
     generate_dockerfile("centos8", "centos-stream-8")
     generate_dockerfile("debian-amd64", "debian-11",
                         trailer="".join(debian11_extras))