Update test.yml to use uv pip install

.github/workflows/test.yml

@@ -38,18 +38,22 @@ jobs:
         id: cache
         with:
           path: ${{ env.pythonLocation }}
-          key: ${{ runner.os }}-python-${{ env.pythonLocation }}-${{ hashFiles('pyproject.toml') }}-test-v00
+          key: ${{ runner.os }}-python-${{ env.pythonLocation }}-${{ hashFiles('pyproject.toml') }}-test-latest
 
       - name: Install dependencies
         if: steps.cache.outputs.cache-hit != 'true'
         run: |
           python_version=$(python -c "import sys; print(sys.version_info[:2])")
 
-          pip install -e .[dev,tests,anthropic,argilla,cohere,groq,hf-inference-endpoints,hf-transformers,litellm,llama-cpp,ollama,openai,outlines,vertexai,vllm]
+          pip install uv
+          uv pip install --system --resolution highest -e .[dev,tests,anthropic,argilla,cohere,groq,hf-inference-endpoints,hf-transformers,litellm,llama-cpp,ollama,openai,outlines,vertexai,vllm]
           if [ "${python_version}" != "(3, 8)" ]; then
-            pip install -e .[mistralai,instructor]
+            uv pip install --system --resolution highest -e .[mistralai,instructor]
           fi;
-          pip install git+https://github.com/argilla-io/LLM-Blender.git
+          # We're using a custom fork since otherwise LLM-Blender cannot be installed
+          # due to a dependency mismatch on their end, solved in the fork by pinning
+          # the `spaCy` dependency
+          uv pip install --system git+https://github.com/argilla-io/LLM-Blender.git
 
       - name: Lint
         run: make lint