⬆️ Update pip to v25.3 (#339)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

base/Dockerfile

@@ -12,7 +12,7 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
 # Install base system
 ARG PYTHON_VERSION="v3.13.7"
-ARG PYTHON_PIP_VERSION="25.2"
+ARG PYTHON_PIP_VERSION="25.3"
 ARG PYTHON_SETUPTOOLS_VERSION="80.9.0"
 # hadolint ignore=DL3003,DL4006,SC2155
 RUN \