chore: add AppImage release packaging

packaging/appimage/Dockerfile

@@ -2,6 +2,8 @@ FROM ubuntu:24.04
 
 COPY --from=ghcr.io/astral-sh/uv:0.10.2 /uv /uvx /usr/local/bin/
 
+ARG APPIMAGE_BUILDER_VERSION=1.1.0
+
 ENV DEBIAN_FRONTEND=noninteractive \
     PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1
@@ -29,6 +31,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 RUN python3 -m pip install --no-cache-dir --break-system-packages \
     "packaging<21" \
-    appimage-builder
+    "appimage-builder==${APPIMAGE_BUILDER_VERSION}"
 
 WORKDIR /work