Use "uv" for building virtual environments

Change-Id: I5e24e82e6347d351cac71255904b44aa558d449b
(cherry picked from commit 4e2d8ac7928cb95aadbd0587230837281827976a)
diff --git a/images/neutron/Dockerfile b/images/neutron/Dockerfile
index 68c7198..2860393 100644
--- a/images/neutron/Dockerfile
+++ b/images/neutron/Dockerfile
@@ -20,8 +20,8 @@
 ARG LOG_PASER_GIT_REF=9bc923c1294864ec709c538ba5c309065ef710d5
 ADD --keep-git-dir=true https://github.com/vexxhost/neutron-ovn-network-logging-parser.git#${LOG_PASER_GIT_REF} /src/neutron-ovn-network-logging-parser
 RUN git -C /src/neutron-ovn-network-logging-parser fetch --unshallow
-RUN --mount=type=cache,mode=0755,target=/root/.cache/pip,sharing=private <<EOF bash -xe
-pip3 install \
+RUN --mount=type=cache,target=/root/.cache/uv <<EOF bash -xe
+uv pip install \
     --constraint /upper-constraints.txt \
         /src/neutron \
         /src/neutron-vpnaas \