add dep and update dbt config (#27096)

## Summary & Motivation
Minor updates to project dependencies and dbt configuration (number of
threads and cleaner source file.
## How I Tested These Changes

## Changelog

> Insert changelog entry or delete this section.

examples/project_atproto_dashboard/dbt_project/models/sources.yml

@@ -2,13 +2,11 @@ version: 2
 
 sources:
   - name: r2_bucket
+    meta: 
+      external_location: "read_ndjson_objects('r2://dagster-demo/atproto_{name}/**/*.json', filename=true)"
     tables:
       - name: actor_feed_snapshot
         description: "external r2 bucket with json files of actor feeds"
-        meta:
-          external_location: "read_ndjson_objects('r2://dagster-demo/atproto_actor_feed_snapshot/**/*.json', filename=true)"
       - name: starter_pack_snapshot
         description: "external r2 bucket with json files for feed snapshots"
-        meta:
-          external_location: "read_ndjson_objects('r2://dagster-demo/atproto_starter_pack_snapshot/**/*.json', filename=true)"
 

examples/project_atproto_dashboard/dbt_project/profiles.yml

@@ -5,7 +5,7 @@ bluesky:
       type: duckdb
       schema: bluesky_dev
       path: "local.duckdb"
-      threads: 16
+      threads: 1
       extensions: 
         - httpfs
       settings:
@@ -16,8 +16,8 @@ bluesky:
     prod:
       type: duckdb
       schema: bluesky
-      path: "md:prod_bluesky?MOTHERDUCK_TOKEN={{ env_var('MOTHERDUCK_TOKEN') }}"
-      threads: 16
+      path: "md:prod_bluesky"
+      threads: 1
       extensions: 
         - httpfs
       settings:

examples/project_atproto_dashboard/pyproject.toml

@@ -11,6 +11,7 @@ dependencies = [
     "dagster-dbt",
     "dagster-duckdb",
     "dagster-powerbi",
+    "dagster-webserver",
     "dbt-duckdb",
     "tenacity",
 ]