Reduce Zephyr test time

.github/workflows/test.yml

@@ -121,19 +121,18 @@ jobs:
       - uses: actions/checkout@v3
       - name: ${{ matrix.example.path }}
         run: make -C examples/${{ matrix.example.path }} build
-  matrix_zephyr_examples:
+  zephyr_examples:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        zephyrexample:
-          - path: zephyr/device-dashboard
-          - path: zephyr/http-client
-          - path: zephyr/http-server
-          - path: zephyr/mqtt-aws-client
-          - path: zephyr/websocket-server
-    name: ${{ matrix.zephyrexample.name }}
     steps:
       - uses: actions/checkout@v3
-      - name: ${{ matrix.zephyrexample.path }}
-        run: make -C examples/${{ matrix.zephyrexample.path }} zephyr build
+      - run: make -C examples/zephyr init
+      - name: minify manifest
+        uses: mikefarah/yq@master
+        with:
+          cmd: yq -i eval '(.manifest.defaults, .manifest.remotes, .manifest.projects[] | select(.name == "cmsis" or .name == "hal_stm32" or .name == "mbedtls" or .name == "mcuboot" or .name == "picolibc" | del(.null) ), .manifest.self) as $i ireduce({};setpath($i | path; $i)) | del(.manifest.projects.[].null) | del(..|select(length==0))' examples/zephyr/zephyrproject/zephyr/west.yml
+      - run: make -C examples/zephyr update
+      - run: make -C examples/zephyr/device-dashboard build
+      - run: make -C examples/zephyr/http-client build
+      - run: make -C examples/zephyr/http-server build
+      - run: make -C examples/zephyr/mqtt-aws-client build
+      - run: make -C examples/zephyr/websocket-server build