Update requirements.txt

1. fastapi/typer#377 makes it necessary to
   update the version of typer to use a pinned version of click
   (that has the `get_terminal_size` function)
2. updated the other couple of main deoendencies a little
3. also need to specify requests
4. generated a new requirements.txt using `pip freeze`

After which `python search.py --help` works.

requirements.txt

@@ -1,3 +1,4 @@
-opensearch-py==1.0.0
-python-dotenv==0.19.2
-typer==0.4.0
+opensearch-py==1.1.0
+click==8.1.3
+python-dotenv==0.20.0
+typer==0.4.1