Bump the github-actions group across 1 directory with 2 updates

Bumps the github-actions group with 2 updates in the / directory: [actions/setup-node](https://github.com/actions/setup-node) and [mymindstorm/setup-emsdk](https://github.com/mymindstorm/setup-emsdk).


Updates `actions/setup-node` from 6.3.0 to 6.4.0
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@53b8394...48b55a0)

Updates `mymindstorm/setup-emsdk` from 15 to 16
- [Release notes](https://github.com/mymindstorm/setup-emsdk/releases)
- [Commits](emscripten-core/setup-emsdk@667eb33...4528d10)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
- dependency-name: mymindstorm/setup-emsdk
  dependency-version: '16'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/emscripten.yml

@@ -5,8 +5,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98 # v4.2.2
-      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
-      - uses: mymindstorm/setup-emsdk@667eb33f24e84e7f362c16d8d7fff0629a73e15e # v15
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+      - uses: mymindstorm/setup-emsdk@4528d102f7230f0e7b276855c01ea1159be0e984 # v16
       - name: Verify
         run: emcc -v
       - name: Checkout