chore(deps): update pnpm/action-setup digest to 8912a91 (#2502)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [pnpm/action-setup](https://redirect.github.com/pnpm/action-setup)
([changelog](https://redirect.github.com/pnpm/action-setup/compare/26f6d4f2c533a43e6b5da0b4a5dd983f98f7b49a..8912a9102ac27614460f54aedde9e1e7f9aec20d))
| action | digest | `26f6d4f` → `8912a91` |

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.github/actions/prepare/action.yml

@@ -4,7 +4,7 @@ name: Prepare
 
 runs:
   steps:
-    - uses: pnpm/action-setup@26f6d4f2c533a43e6b5da0b4a5dd983f98f7b49a # v6
+    - uses: pnpm/action-setup@8912a9102ac27614460f54aedde9e1e7f9aec20d # v6
     - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
       with:
         cache: pnpm