gh-actions: Install libcurl-dev for pycurl (needed by arvados)

Author: mr-c

.github/workflows/ci-tests.yml

@@ -51,6 +51,10 @@ jobs:
           allow-prereleases: true
           cache: pip
 
+      - name: Install libcurl-dev for pycurl (needed by arvados)
+        if: ${{ matrix.step == 'mypy' }}
+        run: sudo apt-get install -y --no-install-recommends libcurl4-gnutls-dev gnutls-dev
+
       - name: Upgrade setuptools and install tox
         run: |
           pip install -U pip setuptools wheel