Update postgres Docker tag to v13.16 (#5104)

Co-authored-by: Madison Swain-Bowden <bowdenm@spu.edu>

Author: openverse-bot

docker/upstream_db/Dockerfile

@@ -1,13 +1,14 @@
 # syntax=docker/dockerfile:1
 
-FROM postgres:13.10 AS db
+FROM postgres:13.16 AS db
 
 ARG PGCLI_VERSION
 
 # Container optimizations
 ENV PYTHONUNBUFFERED=1
 ENV PIP_NO_CACHE_DIR=1
 ENV PIP_NO_COLOR=1
+ENV PIPX_BIN_DIR=/usr/local/bin
 
 # Enable stop-on-error
 # https://www.postgresql.org/docs/current/app-psql.html
@@ -18,10 +19,10 @@ RUN apt-get update \
     && apt-get install -yqq --no-install-recommends \
       python3-boto3 \
       postgresql-plpython3-13 \
-      python3-pip \
       libpq-dev \
+      pipx \
     && apt-get autoremove -y \
     && rm -rf /var/lib/apt/lists/* \
-    && pip3 install -U pip pgcli==${PGCLI_VERSION}
+    && pipx install pgcli==${PGCLI_VERSION}
 
 COPY *.sql /docker-entrypoint-initdb.d/