Try to fix CI error

Author: ufechner7

.github/workflows/CI.yml

@@ -43,6 +43,8 @@ jobs:
       - name: Install matplotlib
         run: if [ "$RUNNER_OS" = "Linux" ]; then sudo apt-get install -y python3-matplotlib; fi
         shell: bash
+      - name: Instantiate project
+        run: julia -e 'using Pkg; Pkg.activate("."); Pkg.resolve(); Pkg.instantiate(); 
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v2
         with:
@@ -84,6 +86,8 @@ jobs:
     - name: Install matplotlib
       run: if [ "$RUNNER_OS" = "Linux" ]; then sudo apt-get install -y python3-matplotlib; fi
       shell: bash
+    - name: Instantiate project
+      run: julia -e 'using Pkg; Pkg.activate("."); Pkg.resolve(); Pkg.instantiate(); 
     - uses: actions/checkout@v4
     - uses: julia-actions/setup-julia@v2
       with: