fix downgrade ci julia version

Author: SebastianM-C

.github/workflows/Downgrade.yml

@@ -16,14 +16,14 @@ jobs:
   test:
     runs-on: ${{ matrix.os }}
     env:
-      GROUP: ${{ matrix.group }}    
+      GROUP: ${{ matrix.group }}
     strategy:
       fail-fast: false
       matrix:
         group:
           - Core
         version:
-          - '1'
+          - '1.10'
         os:
           - ubuntu-latest
           - macos-latest
@@ -40,4 +40,4 @@ jobs:
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
       - uses: julia-actions/julia-buildpkg@v1
-      - uses: julia-actions/julia-runtest@v1
+      - uses: julia-actions/julia-runtest@v1