ci: rename CI.yml to Tests.yml following SciML convention

Author: thazhemadam

.github/workflows/CI.yml renamed to .github/workflows/Tests.yml

@@ -1,4 +1,5 @@
-name: CI
+name: "Tests"
+
 on:
   pull_request:
     branches:
@@ -12,21 +13,16 @@ on:
       - 'docs/**'
 jobs:
   test:
+    name: "Tests"
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        group:
-          - Core
-        version:
-          - '1'
     env:
       PYTHON: python3
 
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
-          version: ${{ matrix.version }}
+          version: '1'
       - uses: actions/cache@v4
         env:
           cache-name: cache-artifacts