fix(DATAGO-126556): pin virtualenv for hatch Dockerfile (#1103)

Author: dylanwalsh-solace

Dockerfile

@@ -76,7 +76,7 @@ RUN echo "deb http://deb.debian.org/debian unstable main" > /etc/apt/sources.lis
     mv /root/.local/bin/uv /usr/local/bin/uv && \
     rm -rf /var/lib/apt/lists/* /etc/apt/sources.list.d/unstable.list /etc/apt/preferences.d/99pin-libtasn1 && \
     python3 -m venv /opt/venv && \
-    uv pip install --system hatch
+    uv pip install --system "virtualenv<21" hatch
 
 WORKDIR /app