refactor: Prepare for Postgres 18

Author: cbaker6

Dockerfile

@@ -1,11 +1,11 @@
-FROM postgres:17-bullseye
+FROM postgres:18-trixie
 
 LABEL maintainer="HIPAA Postgres w/ PostGIS Project" \
-      org.opencontainers.image.description="PostGIS 3.5.2+dfsg-1.pgdg110+1 spatial database extension with PostgreSQL 17 bullseye" \
+      org.opencontainers.image.description="PostGIS 3.6.0+dfsg-1.pgdg13+1 spatial database extension with PostgreSQL 17 bullseye" \
       org.opencontainers.image.source="https://github.com/netreconlab/hipaa-postgres/"
 
 ENV POSTGIS_MAJOR=3
-ENV POSTGIS_VERSION=3.5.2+dfsg-1.pgdg110+1
+ENV POSTGIS_VERSION=3.6.0+dfsg-1.pgdg13+1
 ENV POSTGRES_INITDB_ARGS="--data-checksums"
 
 RUN apt-get update \