ci: fix failures

Author: tueda

.github/workflows/release.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   release:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v4

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         python-version: [ 3.7, 3.8, 3.9, '3.10', '3.11', '3.12' ]
         java-version: [ 8, 11, 17, 21 ]
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.python-version == 3.7 && 'ubuntu-22.04' || 'ubuntu-latest' }}
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v4
@@ -70,7 +70,7 @@ jobs:
 
   readme_dev:
     # Test the code in "Development" in README.rst.
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v4