Try again to set up pip

.forgejo/workflows/build.yaml

@@ -40,10 +40,11 @@ jobs:
         uses: actions/setup-python@v5
         with:
           cache: pip
-      - name: Install pip
-        run: python3 -m ensurepip
       - name: Set up Python environment
-        run: python3 -m pip install -r requirements.txt
+        run: |
+          curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
+          python3 get-pip.py
+          python3 -m pip install -r requirements.txt
       - name: Set up Rust
         uses: https://github.com/dtolnay/rust-toolchain@stable
       - name: Build Rust code
@@ -57,5 +58,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Set up Rust
         uses: https://github.com/dtolnay/rust-toolchain@stable
+      - name: Set up Python toolchain
+        uses: actions/setup-python@v5
       - name: Run Rust tests
         run: cargo test