Include tests for pydantic 2.8 and 2.7

.github/workflows/test.yml

@@ -51,7 +51,7 @@ jobs:
           - "3.10"
           - "3.9"
           - "3.8"
-        pydantic-version: ["pydantic-v1", "pydantic-v2"]
+        pydantic-version: ["pydantic-v1", "pydantic-v2.7", "pydantic-v2.8+"]
       fail-fast: false
     steps:
       - name: Dump GitHub context
@@ -78,8 +78,11 @@ jobs:
         if: matrix.pydantic-version == 'pydantic-v1'
         run: pip install "pydantic>=1.10.0,<2.0.0"
       - name: Install Pydantic v2
-        if: matrix.pydantic-version == 'pydantic-v2'
+        if: matrix.pydantic-version == 'pydantic-v2.7'
-        run: pip install "pydantic>=2.0.2,<3.0.0"
+        run: pip install "pydantic>=2.0.2,<2.8"
+      - name: Install Pydantic v2.8+
+        if: matrix.pydantic-version == 'pydantic-v2.8+'
+        run: pip install "pydantic>=2.8,<3.0"
       - run: mkdir coverage
       - name: Test
         run: bash scripts/test.sh