Update Downgrade.yml

Author: ChrisRackauckas

.github/workflows/Downgrade.yml

@@ -26,6 +26,7 @@ jobs:
       - uses: julia-actions/julia-downgrade-compat@v2
         with:
           skip: Pkg,TOML
+          version: ${{ matrix.julia-version }}
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
         with: