Prepare for CI to move to OpenWrt 23.05.3 (#16)

* Prepare for CI to move to OpenWrt 23.05.3

* Don't prepend STAGING_DIR_HOST to PATH

This causes the OpenWrt prereq-build step to get confused since it is looking
for host binaries on PATH and then symlinks them into that directory.

.containers/matter-openwrt-build/Dockerfile

@@ -1,13 +1,11 @@
-ARG OPENWRT_VERSION=22.03.5
+ARG OPENWRT_VERSION=23.05.3
 FROM ghcr.io/openwrt/sdk:x86-generic-${OPENWRT_VERSION}
 LABEL org.opencontainers.image.description="Pre-warmed OpenWrt SDK"
 
 # Core packages to pre-build to speed up CI builds
 ARG SRC_PACKAGES="glib2 openssl ubus"
 ARG CFG_PACKAGES="glib2 libopenssl libubus"
 
-# Add host tools from WORKDIR (/builder) to PATH
-ENV PATH="/builder/staging_dir/host/bin:$PATH"
 RUN set -x && \
     grep -w 'base\|packages' feeds.conf.default > feeds.conf && \
     ./scripts/feeds update -a && \

.github/workflows/build-packages.yaml

@@ -17,7 +17,7 @@ jobs:
       - name: Build
         uses: addnab/docker-run-action@v3
         with:
-          image: ghcr.io/project-chip/matter-openwrt-build:latest
+          image: ghcr.io/project-chip/matter-openwrt-build:22.03.5
           options: --volume ${{ github.workspace }}:/workspace
           shell: bash
           run: |