Fix github actions on push by switching to pip only

Author: LucaRom

.github/workflows/github-actions-ci.yml

@@ -6,24 +6,20 @@ jobs:
   run-tests:
     runs-on: ubuntu-22.04
 
-    defaults:
-      run:
-        shell: bash -el {0}
-
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4.1.2
+        uses: actions/checkout@v4
 
-      - name: Setup conda with mamba
-        uses: conda-incubator/setup-miniconda@v3
+      - name: Set up Python
+        uses: actions/setup-python@v5
         with:
-          mamba-version: "*"
-          python-version: 3.10
-          auto-activate-base: false
-          activate-environment: geo_deep_env
+          python-version: "3.10"
+          cache: "pip"
 
-      - name: Install pip requirements
-        run: pip install -r requirements.txt
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
 
-      - name: Run tests with pytest
+      - name: Run tests
         run: pytest tests/