ci: enable IPC tests in CI

.github/workflows/ci.yml

@@ -95,6 +95,7 @@ jobs:
       - run: |
           sudo apt-get update
           sudo apt-get install clang mold ccache build-essential cmake ninja-build pkgconf python3-zmq libevent-dev libboost-dev libsqlite3-dev systemtap-sdt-dev libzmq3-dev qt6-base-dev qt6-tools-dev qt6-l10n-tools libqrencode-dev capnproto libcapnp-dev -y
+          sudo pip3 install --break-system-packages pycapnp
       - name: Compile and run tests
         run: |
           # Run tests on commits after the last merge commit and before the PR head commit
@@ -152,6 +153,11 @@ jobs:
           brew install --quiet python@3 || brew link --overwrite python@3
           brew install --quiet coreutils ninja pkgconf gnu-getopt ccache boost libevent zeromq qt@6 qrencode capnp
 
+      - name: Install Python packages
+        run: |
+          git clone -b v2.1.0 https://github.com/capnproto/pycapnp
+          pip3 install ./pycapnp -C force-bundled-libcapnp=True --break-system-packages
+
       - name: Set Ccache directory
         run: echo "CCACHE_DIR=${RUNNER_TEMP}/ccache_dir" >> "$GITHUB_ENV"