base: Update JupyterLab to v4.3.4

- Unpin httpx

VERSION_MATRIX.md

@@ -8,7 +8,7 @@ Topmost entry = Tag `latest`
 
 | Python     | Jupyter Hub | Jupyter Lab | code‑server (Code) | Neovim | Git    | Git LFS | Pandoc | Linux distro |
 |:-----------|:------------|:------------|:-------------------|:-------|:-------|:--------|:-------|:-------------|
-| 3.13.1[^1] | 5.2.1       | 4.2.6       | 4.96.2 (1.96.2)    | 0.10.2 | 2.47.1 | 3.6.0   | 3.4    | Debian 12    |
+| 3.13.1[^1] | 5.2.1       | 4.3.4       | 4.96.2 (1.96.2)    | 0.10.2 | 2.47.1 | 3.6.0   | 3.4    | Debian 12    |
 | 3.12.8     | 5.2.1       | 4.2.5       | 4.95.3 (1.95.3)    | 0.10.2 | 2.47.1 | 3.6.0   | 3.4    | Debian 12    |
 | 3.13.0[^1] | 5.2.1       | 4.2.5       | 4.95.3 (1.95.3)    | 0.10.2 | 2.47.1 | 3.6.0   | 3.4    | Debian 12    |
 | 3.12.7     | 5.2.1       | 4.2.5       | 4.95.3 (1.95.3)    | 0.10.2 | 2.47.1 | 3.6.0   | 3.4    | Debian 12    |

base/latest.Dockerfile

@@ -7,7 +7,7 @@ ARG CUDA_IMAGE_FLAVOR
 ARG NB_USER=jovyan
 ARG NB_UID=1000
 ARG JUPYTERHUB_VERSION=5.2.1
-ARG JUPYTERLAB_VERSION=4.2.6
+ARG JUPYTERLAB_VERSION=4.3.4
 ARG CODE_BUILTIN_EXTENSIONS_DIR=/opt/code-server/lib/vscode/extensions
 ARG CODE_SERVER_VERSION=4.96.2
 ARG NEOVIM_VERSION=0.10.2
@@ -264,7 +264,6 @@ RUN mkdir /opt/code-server \
 ## Install JupyterLab
 RUN export PIP_BREAK_SYSTEM_PACKAGES=1 \
   && pip install \
-    httpx==0.27.2 \
     jupyter-server-proxy \
     jupyterhub==${JUPYTERHUB_VERSION} \
     jupyterlab==${JUPYTERLAB_VERSION} \