Bump dbt-sl-sdk==0.13.3 (#785)

## Summary
<!-- Provide a brief description of the changes in this PR -->
Made a fix upstream in `dbt-sl-sdk` that fully addresses and closes #210
at the root. Bumping the version to incorporate these changes. More
context
[here](dbt-labs/semantic-layer-sdk-python#104).

Also updated relevant prompt examples to remove old workaround.

Author: jairus-m

.changes/unreleased/Under the Hood-20260522-111026.yaml

@@ -0,0 +1,3 @@
+kind: Under the Hood
+body: Bump dbt-sl-sdk==0.13.3
+time: 2026-05-22T11:10:26.677403-07:00

pyproject.toml

@@ -30,7 +30,7 @@ classifiers = [
 dependencies = [
   "authlib~=1.6.7",
   "dbt-protos~=1.0.431",
-  "dbt-sl-sdk[sync]~=0.13.2",
+  "dbt-sl-sdk[sync]~=0.13.3",
   "dbtlabs-vortex~=0.2.0",
   "fastapi~=0.128.0",
   "uvicorn~=0.38.0",

src/dbt_mcp/prompts/semantic_layer/query_metrics.md

@@ -94,12 +94,12 @@ Thinking step-by-step:
   - I should first limit results to verify the query works
 Parameters (initial query):
     metrics=["average_order_value"]
-    group_by=[{"name": "product_category", "type": "dimension", "grain": null}]
+    group_by=[{"name": "product_category", "type": "dimension"}]
     where="{{ Dimension('order_value') }} > 100"
     limit=10
 Follow-up Query (after verifying results):
     metrics=["average_order_value"]
-    group_by=[{"name": "product_category", "type": "dimension", "grain": null}]
+    group_by=[{"name": "product_category", "type": "dimension"}]
     where="{{ Dimension('order_value') }} > 100"
     limit=null
 </example>
@@ -144,7 +144,7 @@ Response to user:
     If user agrees, then:
 Parameters:
     metrics=["net_promoter_score"]
-    group_by=[{"name": "region", "type": "dimension", "grain": null}]
+    group_by=[{"name": "region", "type": "dimension"}]
     order_by=[{"name": "net_promoter_score", "descending": true}]
     limit=10
 </example>