github: Add 30 minute timeout to all jobs

We're getting hit by macOS runner concurrency limits whenever some jobs
get stuck (for example, because of a deadlock).

.github/workflows/python.yml

@@ -17,6 +17,7 @@ env:
 jobs:
   configure-strategy:
     runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 30
     outputs:
       python-versions: ${{ steps.gen-matrix.outputs.python-versions }}
     steps:
@@ -26,6 +27,7 @@ jobs:
 
   test:
     needs: configure-strategy
+    timeout-minutes: 30
     strategy:
       matrix:
         os:
@@ -64,6 +66,7 @@ jobs:
 
   lint:
     runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 30
 
     steps:
       - name: Checkout code
@@ -85,6 +88,7 @@ jobs:
 
   linux:
     runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 30
     defaults:
       run:
         working-directory: ${{ env.working-directory }}
@@ -112,6 +116,7 @@ jobs:
 
   macos-arm64:
     runs-on: macos-14
+    timeout-minutes: 30
     defaults:
       run:
         working-directory: ${{ env.working-directory }}
@@ -141,6 +146,7 @@ jobs:
 
   sdist:
     runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 30
     defaults:
       run:
         working-directory: ${{ env.working-directory }}
@@ -161,6 +167,7 @@ jobs:
   release:
     name: Release
     runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 30
     if: "startsWith(github.ref, 'refs/tags/')"
     needs: [linux, macos-arm64, sdist]
     steps: