ci: Stop using mamba, install make

Author: peanutfun

.github/workflows/ci.yml

@@ -34,16 +34,10 @@ jobs:
         id: date
         run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"
       -
-        name: Create Environment with Mamba
-        uses: mamba-org/setup-micromamba@v3
+        name: Install make
+        uses: awalsh128/cache-apt-pkgs-action@v1.6
         with:
-          environment-name: climada_env
-          environment-file: requirements/base.yml
-          create-args: >-
-            python=${{ matrix.python-version }}
-            make
-          # Persist environment for branch, Python version, single day
-          cache-environment-key: env-${{ github.ref }}-${{ steps.date.outputs.date }}
+          packages: make
       -
         name: Install uv
         uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b  # v8.1.0
@@ -52,7 +46,7 @@ jobs:
       -
         name: Install dependencies
         run: |
-          uv sync --locked --dev --no-managed-python
+          uv sync --locked --dev
       -
         name: Run Unit Tests
         run: |