fix: add redis to run tests

Author: Yuri Zmytrakov

stac_fastapi/opensearch/pyproject.toml

@@ -49,6 +49,7 @@ dev = [
     "pre-commit~=3.0.0",
     "ciso8601~=2.3.0",
     "httpx>=0.24.0,<0.28.0",
+    "redis==6.4.0",
 ]
 docs = [
     "mkdocs~=1.4.0",