upstream dropped support for pydantic 1

Author: sneakers-the-rat

.github/workflows/test-upstream.yaml

@@ -11,18 +11,9 @@ jobs:
       matrix:
         os: [ ubuntu-latest, windows-latest ]
         python-version: [ "3.8", "3.9", "3.10", "3.11" ]
-        pydantic-version: [ "1", "2" ]
         exclude:
           - os: windows-latest
             python-version: "3.8"
-          - os: windows-latest
-            pydantic-version: "1"
-          - python-version: "3.8"
-            pydantic-version: "1"
-          - python-version: "3.9"
-            pydantic-version: "1"
-          - python-version: "3.10"
-            pydantic-version: "1"
     runs-on: ${{ matrix.os }}
     env:
       POETRY_VIRTUALENVS_IN_PROJECT: true
@@ -81,11 +72,6 @@ jobs:
         working-directory: linkml
         run: poetry add ../linkml-runtime
 
-      # use correct pydantic version
-      - name: install pydantic
-        working-directory: linkml
-        run: poetry add pydantic@^${{ matrix.pydantic-version }}
-
       # note that we run the installation step always, even if we restore a venv,
       # the cache will restore the old version of linkml-runtime, but the lockfile
       # will only store the directory dependency (and thus will reinstall it)