Final CI update

Author: goedman

.github/workflows/CI.yml

@@ -66,7 +66,7 @@ jobs:
       - uses: julia-actions/julia-buildpkg@latest
       - uses: julia-actions/julia-runtest@latest
         env:
-          JULIA_CMDSTAN_HOME: "/home/runner/cmdstan-2.25.0/"
+          JULIA_CMDSTAN_HOME: "/home/runner/cmdstan-2.26.0/"
       - uses: julia-actions/julia-processcoverage@v1
         if: matrix.version == '1' && matrix.os == 'ubuntu-latest' && matrix.num_threads == 1
       - uses: codecov/codecov-action@v1