Run tests on R2026a at least once

Author: Sam Eagen

.github/workflows/build_and_test_simple.yml

@@ -41,7 +41,7 @@ jobs:
             - name: Install MATLAB
               uses: matlab-actions/setup-matlab@v2
               with:
-                release: R2025a
+                release: latest-including-prerelease
                 products: MATLAB_Compiler MATLAB_Compiler_SDK
             - name: Build OpenTelemetry-Matlab
               working-directory: opentelemetry-matlab