Swift: add pip to codespace

Author: redsun82

.devcontainer/swift/root.sh

@@ -5,7 +5,8 @@ export DEBIAN_FRONTEND=noninteractive
 apt-get -y install --no-install-recommends \
     zlib1g-dev \
     uuid-dev \
-    python3-distutils
+    python3-distutils \
+    python3-pip
 
 # Install Bazel
 curl -fSsL -o /usr/local/bin/bazelisk https://github.com/bazelbuild/bazelisk/releases/download/${BAZELISK_VERSION}/bazelisk-linux-amd64