Updating Conda action version

.github/workflows/ci_testing.yml

@@ -23,9 +23,8 @@ jobs:
       - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
         with:
           submodules: true
-      - uses: conda-incubator/setup-miniconda@3b0f2504dd76ef23b6d31f291f4913fb60ab5ff3
+      - uses: conda-incubator/setup-miniconda@v3
         with:
-          miniforge-version: latest
           use-mamba: true
           channels: conda-forge
           activate-environment: ale