blacksmith.sh: Migrate workflows to Blacksmith (#79)

This PR migrates some selected workflows to Blacksmith.

Co-authored-by: blacksmith-sh[bot] <157653362+blacksmith-sh[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -2,11 +2,11 @@ name: build
 on: [push, pull_request]
 jobs:
   lint:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2204
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python 3.7
-      uses: actions/setup-python@v5
+      uses: useblacksmith/setup-python@v6
       with:
         python-version: '3.7'
     - name: Install flake8
@@ -16,15 +16,15 @@ jobs:
         flake8 --version
         flake8
   unit:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2204
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python 3.7
-      uses: actions/setup-python@v5
+      uses: useblacksmith/setup-python@v6
       with:
         python-version: '3.7'
     - name: Cache pip
-      uses: actions/cache@v4
+      uses: useblacksmith/cache@v5
       with:
         path: ~/.cache/pip
         key: pip-${{ runner.os }}-${{ secrets.CACHE_VERSION }}-${{ hashFiles('requirements.txt') }}
@@ -42,11 +42,11 @@ jobs:
       run: coverage xml
     - uses: codecov/codecov-action@v4
   styles:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2204
     steps:
       - uses: actions/checkout@v4
       - name: Set up Node 20
-        uses: actions/setup-node@v4
+        uses: useblacksmith/setup-node@v5
         with:
           node-version: 20
       - name: Install npm packages

.github/workflows/compilemessages.yml

@@ -8,11 +8,11 @@ on:
       - 'locale/**'
 jobs:
   compilemessages:
-    runs-on: ubuntu-latest
+    runs-on: blacksmith-4vcpu-ubuntu-2204
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python 3.7
-      uses: actions/setup-python@v5
+      uses: useblacksmith/setup-python@v6
       with:
         python-version: '3.7'
     - name: Checkout submodules