Migrate fast and simple actions to ubuntu-slim runner

Author: jason-rl

.github/workflows/publish-pypi.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   publish:
     name: publish
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
 
     steps:
       - uses: actions/checkout@v6

.github/workflows/release-doctor.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   release_doctor:
     name: release doctor
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     if: github.repository == 'runloopai/api-client-python' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || startsWith(github.head_ref, 'release-please') || github.head_ref == 'next')
 
     steps:

.github/workflows/smoketests.yml

@@ -13,7 +13,7 @@ on:
 
 jobs:
   smoketests:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     timeout-minutes: 120
     steps:
       - name: Checkout

.github/workflows/sphinx.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     permissions:
       contents: write
     steps: