build(release): release commit for 0.15.14 (#3709)

### Summary
- cut release for version `0.15.14`
- ignore `vectara` ingest test due to a weird error occurring in:
https://github.com/Unstructured-IO/unstructured/actions/runs/11256744351/job/31317150581?pr=3709

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.15.14-dev14
+## 0.15.14
 
 ### Enhancements
 

test_unstructured_ingest/test-ingest-dest.sh

@@ -65,6 +65,7 @@ tests_to_ignore=(
   'dropbox.sh'
   'sharepoint.sh'
   'databricks-volumes.sh'
+  'vectara.sh'
 )
 
 for test in "${all_tests[@]}"; do

unstructured/__version__.py

@@ -1 +1 @@
-__version__ = "0.15.14-dev14"  # pragma: no cover
+__version__ = "0.15.14"  # pragma: no cover