fix: increase lint timeout and cache mypy in CI

Author: atanasiuk-hubspot

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ on:
 
 jobs:
   lint:
-    timeout-minutes: 10
+    timeout-minutes: 30
     name: lint
     runs-on: ubuntu-latest
     if: (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
@@ -31,6 +31,13 @@ jobs:
       - name: Install dependencies
         run: uv sync --all-extras
 
+      - name: Cache mypy
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        with:
+          path: .mypy_cache
+          key: mypy-${{ runner.os }}-${{ hashFiles('pyproject.toml') }}
+          restore-keys: mypy-${{ runner.os }}-
+
       - name: Run lints
         run: ./scripts/lint
         env: