BAU: use dependency range for lib boto3 dependency

It looks like this is being added to support the `flipper-client` which [pins itself to 1.9x](https://github.com/carta/flipper-client/blob/8c07bae36279b549625eaa1dd7a293d495332a1f/setup.py#L8).

Most of the FS apps seem to use ~1.34x so setting that as a baseline
should allow those to appropriately install.

pyproject.toml

@@ -38,7 +38,7 @@ dependencies = [
     "Flask-SQLAlchemy>=3.0.3",
     "sqlalchemy-utils>=0.38.3",
     "beautifulsoup4==4.12.3",
-    "boto3==1.34.144"
+    "boto3>=1.9.253"
 ]
 
 [project.optional-dependencies]