Update subproject commit reference and enhance GitHub workflows

- Updated the subproject commit reference in the skills directory.
- Modified the build workflow to enable submodule fetching.
- Standardized quotation styles in the package-and-publish workflow for consistency.
- Refactored the `setSkillOAuthCredential` function for improved readability.
- Added an attribute to the `Error` variant in the `SkillMessage` enum to suppress warnings for unused code.

src/store/skillsSlice.ts

@@ -58,7 +58,10 @@ const skillsSlice = createSlice({
       }
     },
 
-    setSkillOAuthCredential(state, action: PayloadAction<{ skillId: string; credential: OAuthCredential | undefined }>) {
+    setSkillOAuthCredential(
+      state,
+      action: PayloadAction<{ skillId: string; credential: OAuthCredential | undefined }>
+    ) {
       const { skillId, credential } = action.payload;
       if (state.skills[skillId]) {
         state.skills[skillId].oauthCredential = credential;