chore: use ubuntu-slim for lightweight jobs

ubuntu-slim is a new cost-efficient runner to fit lightweight jobs.
We can use this to save ASF infra usage (if possible).

This topic was raised in the Apache ORC project, see
apache/orc#2566

Refs:

- https://github.blog/changelog/2025-10-28-1-vcpu-linux-runner-now-available-in-github-actions-in-public-preview/
- https://github.com/actions/runner-images/blob/main/images/ubuntu-slim/ubuntu-slim-Readme.md

Author: zhjwpku

.github/workflows/codeql.yml

@@ -35,7 +35,7 @@ permissions:
 jobs:
   analyze:
     name: Analyze Actions
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     permissions:
       contents: read
       security-events: write

.github/workflows/cpp-linter.yml

@@ -28,7 +28,7 @@ on:
 
 jobs:
   cpp-linter:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
     permissions:
       contents: read
       pull-requests: write

.github/workflows/docs.yml

@@ -34,7 +34,7 @@ permissions:
 
 jobs:
   docs:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
 
     steps:
       - uses: actions/checkout@v6

.github/workflows/license_check.yml

@@ -25,7 +25,7 @@ permissions:
 jobs:
   license-check:
     name: "License Check"
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6

.github/workflows/pre-commit.yml

@@ -29,7 +29,7 @@ permissions:
 
 jobs:
   pre-commit:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
     steps:
     - uses: actions/checkout@v6
     - uses: actions/setup-python@v6