fix: downgrade httpx to remove error

Error:
  File "/home/causer/Desktop/seg/stable-diffusion-webui/venv/lib/python3.8/site-packages/httpx/_transports/default.py", line 275, in __init__
    self._pool = httpcore.AsyncConnectionPool(
TypeError: __init__() got an unexpected keyword argument 'socket_options'

See:
AUTOMATIC1111/stable-diffusion-webui#13836
AUTOMATIC1111/stable-diffusion-webui#13236 (comment)

services/AUTOMATIC1111/Dockerfile

@@ -35,6 +35,7 @@ RUN --mount=type=cache,target=/var/cache/apt \
 RUN --mount=type=cache,target=/cache --mount=type=cache,target=/root/.cache/pip \
   aria2c -x 5 --dir /cache --out torch-2.0.1-cp310-cp310-linux_x86_64.whl -c \
   https://download.pytorch.org/whl/cu118/torch-2.0.1%2Bcu118-cp310-cp310-linux_x86_64.whl && \
+  pip install --upgrade pip && \
   pip install /cache/torch-2.0.1-cp310-cp310-linux_x86_64.whl torchvision --index-url https://download.pytorch.org/whl/cu118
 
 
@@ -70,12 +71,13 @@ RUN --mount=type=cache,target=/root/.cache/pip \
 RUN apt-get -y install libgoogle-perftools-dev && apt-get clean
 ENV LD_PRELOAD=libtcmalloc.so
 
-ARG SHA=5ef669de080814067961f28357256e8fe27544f4
+ARG SHA=v1.6.0
 RUN --mount=type=cache,target=/root/.cache/pip \
   cd stable-diffusion-webui && \
-  git fetch && \
+  git fetch --all --tags && \
   git reset --hard ${SHA} && \
-  pip install -r requirements_versions.txt
+  pip install -r requirements_versions.txt && \
+  pip install httpx==0.24.1
 
 COPY . /docker