2023-07-19 timescaledb - master branch

[Discord](https://discord.com/channels/638610460567928832/638610461109256194/1131148827773112330)
post led to discovery of missing `$` in service definition.

Signed-off-by: Phill Kelley <[email protected]>

Author: Paraphraser

.templates/timescaledb/service.yml

@@ -4,7 +4,7 @@ timescaledb:
   restart: unless-stopped
   environment:
     - POSTGRES_USER=${IOTSTACK_TIMESCALEDB_USER:-postgres}
-    - POSTGRES_PASSWORD={IOTSTACK_TIMESCALEDB_INITIAL_PASSWORD:-IOtSt4ckTim3Scale}
+    - POSTGRES_PASSWORD=${IOTSTACK_TIMESCALEDB_INITIAL_PASSWORD:-IOtSt4ckTim3Scale}
     - POSTGRES_DB=postdb
   ports:
     - "${IOTSTACK_TIMESCALEDB_PORT_INT:-5433}:5432"