Bump mymindstorm/setup-emsdk from 14 to 15

Bumps [mymindstorm/setup-emsdk](https://github.com/mymindstorm/setup-emsdk) from 14 to 15.
- [Release notes](https://github.com/mymindstorm/setup-emsdk/releases)
- [Commits](https://github.com/mymindstorm/setup-emsdk/compare/v14...v15)

---
updated-dependencies:
- dependency-name: mymindstorm/setup-emsdk
  dependency-version: '15'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/docs.yml

@@ -94,7 +94,7 @@ jobs:
            ocamldoc -html -d api/html/ml -sort -hide Z3 -I $( ocamlfind query zarith ) -I ../build-x64/api/ml ../build-x64/api/ml/z3enums.mli ../build-x64/api/ml/z3.mli
 
       - name: Setup emscripten
-        uses: mymindstorm/setup-emsdk@v14
+        uses: mymindstorm/setup-emsdk@v15
         with:
           no-install: true
           version: ${{env.EM_VERSION}}

.github/workflows/wasm-release.yml

@@ -36,7 +36,7 @@ jobs:
           cp ../../../LICENSE.txt .
 
       - name: Setup emscripten
-        uses: mymindstorm/setup-emsdk@v14
+        uses: mymindstorm/setup-emsdk@v15
         with:
           no-install: true
           version: ${{env.EM_VERSION}}

.github/workflows/wasm.yml

@@ -29,7 +29,7 @@ jobs:
           node-version: "lts/*"
 
       - name: Setup emscripten
-        uses: mymindstorm/setup-emsdk@v14
+        uses: mymindstorm/setup-emsdk@v15
         with:
           no-install: true
           version: ${{env.EM_VERSION}}