Change pip install to uv

Author: MaximilianSoerenPollak

.github/workflows/consumer_test.yml

@@ -41,7 +41,7 @@ jobs:
           # & make the tests red in the end. Without this we only would check the exit code of the 'tee' command.
           runCmd: |
             set -euxo pipefail
-            pip install -r src/requirements.txt
+            uv venv && uv pip install -r src/requirements.txt
 
             mkdir -p reports
 
@@ -50,7 +50,7 @@ jobs:
             export PYTHONUNBUFFERED="1"
             export CONSUMER="${{ matrix.consumer }}"
 
-            pytest -s -v src/tests/ \
+            uv run pytest -s -v src/tests/ \
               --repo="$CONSUMER" \
               --junitxml="reports/${{ matrix.consumer }}.xml" \
               | tee "reports/${{ matrix.consumer }}.log"