Clone submodules first before publishing to registries (#3)

Fixes the GitHub action for publishing to PlatformIO and the Espressif
registries by making sure submodules are included. This makes sure that
micro-ogg-demuxer is included with the release.

Author: kahrendt

.github/workflows/publish.yml

@@ -11,6 +11,8 @@ jobs:
     environment: platformio
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          submodules: true
       - name: Set up Python
         uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
@@ -30,6 +32,8 @@ jobs:
       id-token: write
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          submodules: true
       - name: Publish package
         uses: espressif/upload-components-ci-action@2ce17d73e35473317c1419dbd4f007aacb593040 # v2.2.1
         with: