Fix pip not allowing install outside a virtual env

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        vim: [ 'new', 'old' ]
+        vim: [ 'recommended', 'ubuntu' ]
         arch: [ 'x86_64' ]
     runs-on: ubuntu-20.04
     container: 'youcompleteme/ycm-vim-${{ matrix.arch }}-py3:test'
@@ -66,20 +66,19 @@ jobs:
         submodules: recursive
         fetch-depth: 0
     - name: Install dependencies
-      run: sudo -H pip3 install -r python/test_requirements.txt
+      run: sudo -H pip3 install --break-system-packages -r python/test_requirements.txt
     - name: Install Java
       uses: actions/setup-java@v4
       with:
         java-version: 17
         distribution: 'temurin'
     - name: Build ycmd
       run: python3 ./install.py --force-sudo --ts-completer --clangd-completer --java-completer
-    - name: Run tests in old vim
-      # System vim should be oldest supported.
-      if: matrix.vim == 'old'
+    - name: Run tests in Ubuntu default vim
+      if: matrix.vim == 'ubuntu'
       run: ./test/run_vim_tests --vim /usr/bin/vim
-    - name: Run tests in new vim
-      if: matrix.vim == 'new'
+    - name: Run tests in recommended vim
+      if: matrix.vim == 'recommended'
       run: ./test/run_vim_tests
     - name: Combine and summarise coverage
       run: coverage combine && coverage xml