fix: replace deprecated ci runner

.github/workflows/build.yaml

@@ -6,10 +6,10 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
         matrix:
-          python-version: ['3.6.x', '3.7.x', '3.8.x']
+          python-version: ['3.7.x', '3.8.x']
     steps:
       - name: Checkout
         uses: actions/checkout@v1

.github/workflows/pull_request.yml

@@ -8,10 +8,10 @@ on:
 
 jobs:
   test-unit:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
         matrix:
-          python-version: ['3.6.x', '3.7.x', '3.8.x']
+          python-version: ['3.7.x', '3.8.x']
     steps:
       - name: Checkout
         uses: actions/checkout@v1

.github/workflows/pypi_publish.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   release:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/setup-python@v2
         with:

.github/workflows/release.yml

@@ -5,7 +5,7 @@ on: [workflow_dispatch]
 jobs:
   release:
     name: Create Release
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/setup-python@v2
         with:

requirements-dev.txt

@@ -3,3 +3,4 @@ isort
 mypy
 pytest
 pytest-cov
+types-requests

snooker/api/snooker_org.py

@@ -1,4 +1,6 @@
-from typing import List, Optional, Type, Literal  # noqa
+from typing import List, Optional
+
+from typing_extensions import Literal
 
 from snooker.api.base import BaseApi
 from snooker.models.snooker_org.event import Event
@@ -8,6 +10,8 @@
 from snooker.models.snooker_org.round import Round
 from snooker.models.snooker_org.seeding import Seeding
 
+PlayerStatus = Literal['a', 'p']
+
 
 class SnookerOrgApi(BaseApi):
     """
@@ -121,7 +125,7 @@ def event_players(self, event_id: int) -> Optional[List[Player]]:
 
         return self._get_two_dimensional(params, model)
 
-    def players(self, status: Literal['a', 'p'], season: Optional[int]) -> Optional[List[Player]]:
+    def players(self, status: PlayerStatus, season: Optional[int]) -> Optional[List[Player]]:
         """
         Retrieve list of all players in the tour in given season.
 
@@ -212,7 +216,7 @@ def head_to_head(self, player_1_id: int, player_2_id: int, season: Optional[int]
 
         :param player_1_id: ID of a first player
         :param player_2_id: ID of a second player
-        :param season: Season for which data is collected. Use -1 for all seasons (current season if no season provided).
+        :param season: Season for which data is collected. Use -1 for all seasons (current if no season provided).
         :return: List of matches (if available)
         """
         params = {'p1': player_1_id, 'p2': player_2_id, 's': season}