Replace conda with bundled feature in CI

.github/workflows/build_and_test.yml

@@ -41,29 +41,19 @@ jobs:
         with:
           fail_ci_if_error: false
 
-  linux-conda-test:
+  linux-bundled-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: conda-incubator/setup-miniconda@v2
-        with:
-          activate-environment: test
-          allow-softlinks: true
-
-      - name: Install dependencies (SCIPOptSuite)
-        run: |
-          conda install -y --prefix $CONDA/envs/test --channel conda-forge scip
-          echo "LD_LIBRARY_PATH=$CONDA/envs/test/lib" >> "${GITHUB_ENV}"
-          echo "CONDA_PREFIX=$CONDA/envs/test" >> "${GITHUB_ENV}"
-
+      - uses: actions/checkout@v4
+
       - name: Build
         run: |
           cargo build
 
       - name: Test
         run: |
           rustup toolchain install nightly  
-          RUSTFLAGS=-Zsanitizer=leak cargo +nightly test
+          RUSTFLAGS=-Zsanitizer=leak cargo +nightly test --features bundled
 
 # TODO: make this work with a manual run of the action
 #  publish-crate: