Submodules via actions

.github/workflows/main.yml

@@ -73,14 +73,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          submodules: true
       - run: git fetch --tags --force
         name: Force-fetch tags to work around actions/checkout#290
-      # We can't use `--depth 1` here sadly because the GNU config
-      # submodule is not pinned to a particular tag/branch. Please
-      # bump depth (or even better, the submodule), in case of "error:
-      # Server does not allow request for unadvertised object" in the
-      # future.
-      - run: git submodule update --init --depth 32 --jobs 3
 
       # Persist ccache-based caches across builds. This directory is configured
       # via the CCACHE_DIR env var below for ccache to use.
@@ -264,9 +259,9 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+          submodules: true
       - run: git fetch --tags --force
         name: Force-fetch tags to work around actions/checkout#290
-      - run: git submodule update --init --depth 32 --jobs 3
       - name: Setup `wasmtime` for tests
         uses: bytecodealliance/actions/wasmtime/setup@v1
         with: