Update Github checkout action to v3

.github/workflows/docs.yml

@@ -10,7 +10,7 @@ jobs:
   publish-docs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
@@ -30,7 +30,7 @@ jobs:
   type-checking:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
@@ -49,7 +49,7 @@ jobs:
       matrix:
         python-version: [ '3.8', '3.9', '3.10', '3.11' ]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python_version }}
       uses: actions/setup-python@v2
       with:
@@ -75,7 +75,7 @@ jobs:
       matrix:
         os: [ 'ubuntu-latest', 'macos-latest' ]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python
       uses: actions/setup-python@v2
       with:

.github/workflows/publish.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check out the repo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Set up Python 3.9
       uses: actions/setup-python@v2
@@ -46,7 +46,7 @@ jobs:
       contents: read
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Log in to Docker Hub
         uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM python:3.11-alpine
+FROM python:3.10-alpine
 
 WORKDIR /root