fix: add redis to run tests (stac-utils#536)

**Description:**

When running tests locally, in dev environement, we are encountering
redis import error, because it is not being installed:

```
ImportError while loading conftest '/app/stac_fastapi/tests/conftest.py'.
conftest.py:16: in <module>
    from stac_fastapi.core.core import (
../core/stac_fastapi/core/core.py:27: in <module>
    from stac_fastapi.core.redis_utils import redis_pagination_links
../core/stac_fastapi/core/redis_utils.py:11: in <module>
    from redis import asyncio as aioredis
E   ModuleNotFoundError: No module named 'redis'
```

**PR Checklist:**

- [x] Code is formatted and linted (run `pre-commit run --all-files`)
- [x] Tests pass (run `make test`)
- [ ] Documentation has been updated to reflect changes, if applicable
- [x] Changes are added to the changelog

---------

Co-authored-by: Yuri Zmytrakov <yzmytrakovNB@yzmytrakovNB.local>

Author: YuriZmytrakov

CHANGELOG.md

@@ -16,6 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 
+- Add Redis to be installed in dev environemnet for local testing [#536] (https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/536)
+
 ### Removed
 
 ### Updated

stac_fastapi/elasticsearch/pyproject.toml

@@ -48,6 +48,7 @@ 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",

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",