fix ci cache for pydantic versions

Author: irgolic

.github/workflows/ci.yml

@@ -62,7 +62,7 @@ jobs:
                 uses: actions/cache@v3
                 with:
                     path: ~/.cache/pypoetry
-                    key: poetry-cache-${{ runner.os }}-${{ steps.setup_python.outputs.python-version }}-${{ env.POETRY_VERSION }}
+                    key: poetry-cache-${{ runner.os }}-${{ steps.setup_python.outputs.python-version }}-${{ env.POETRY_VERSION }}-${{ matrix.pydantic-version }}
 
             -   name: Install Poetry
                 uses: snok/install-poetry@v1
@@ -71,6 +71,7 @@ jobs:
                 # TODO: fix errors so that we can run `make dev` instead
                 run: |
                     make full
+                    poetry run pip install pydantic==${{ matrix.pydantic-version }}
 
             -   if: matrix.pydantic-version == '2.4.2'
                 name: Static analysis with pyright (ignoring pydantic v1)
@@ -102,14 +103,13 @@ jobs:
                 uses: actions/cache@v3
                 with:
                     path: ~/.cache/pypoetry
-                    key: poetry-cache-${{ runner.os }}-${{ steps.setup_python.outputs.python-version }}-${{ env.POETRY_VERSION }}
+                    key: poetry-cache-${{ runner.os }}-${{ steps.setup_python.outputs.python-version }}-${{ env.POETRY_VERSION }}-${{ matrix.pydantic-version }}
 
             -   name: Install Poetry
                 uses: snok/install-poetry@v1
 
             -   name: Install Dependencies
                 run: |
-                    python -m pip install --upgrade pip
                     make ${{ matrix.dependencies }}
                     python -m pip install pydantic==${{ matrix.pydantic-version }}