Upgrade GitHub Actions to latest versions (#615)

## Summary
This PR upgrades GitHub Actions to their latest versions for Node.js 24
compatibility and security updates.

## Changes

| Action | Old Version(s) | New Version | Files |
|--------|---------------|-------------|-------|
| actions/attest-build-provenance | v1 | v3 | release.yml |


## Why these changes?
- Keeps actions up to date with latest stable releases
- Updated actions include security fixes and new features

## Testing
These changes only update action versions and don't modify workflow
logic.

---------

Signed-off-by: Salman Muin Kayser Chishti <13schishti@gmail.com>

.github/workflows/ci.yml

@@ -109,4 +109,4 @@ jobs:
       - name: Build hf_xet_wasm
         working-directory: hf_xet_wasm
         run: |
-          ./build_wasm.sh
+          ./build_wasm.sh

.github/workflows/release.yml

@@ -379,7 +379,7 @@ jobs:
     steps:
       - uses: actions/download-artifact@v7
       - name: Generate artifact attestation
-        uses: actions/attest-build-provenance@v1
+        uses: actions/attest-build-provenance@v3
         with:
           subject-path: 'wheels-*/*'
       - name: Publish to PyPI