chore(deps): update aiohttp requirement from <4,>=3.7.3 to >=3.13.5,<4 (#1867)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: William Bergamin <wbergamin@slack-corp.com>
Co-authored-by: William Bergamin <wbergamin@salesforce.com>

Author: dependabot[bot]

requirements/optional.txt

@@ -3,7 +3,9 @@
 aiodns>1.0
 # We recommend using 3.7.1+ for RTMClient
 # https://github.com/slackapi/python-slack-sdk/issues/912
-aiohttp>=3.7.3,<4
+aiohttp>=3.7.3,<3.9; python_version == "3.7"
+aiohttp>=3.7.3,<3.11; python_version == "3.8"
+aiohttp>=3.13.5,<4; python_version >= "3.9"
 # used only under slack_sdk/*_store
 boto3<=2
 # InstallationStore/OAuthStateStore

requirements/testing.txt

@@ -1,5 +1,7 @@
 # pip install -r requirements/testing.txt
-aiohttp<4  # used for a WebSocket server mock
+aiohttp<3.9; python_version == "3.7"  # used for a WebSocket server mock
+aiohttp<3.11; python_version == "3.8"  # used for a WebSocket server mock
+aiohttp<4; python_version >= "3.9"  # used for a WebSocket server mock
 pytest>=7.0.1,<9
 pytest-asyncio<2  # for async
 pytest-cov>=2,<8