fix: fix actions uv setup

Author: vivekd22

.github/workflows/release-v2.yml

@@ -33,6 +33,7 @@ jobs:
           python -m pip install --upgrade pip
           # Install uv (once) using pip, then use uv for the rest
           python -m pip install uv
+          uv venv --python 3.12
           uv pip install pytest pytest-asyncio coverage[toml]
 
       - name: Sync environment & install dev extras
@@ -87,6 +88,7 @@ jobs:
       - name: Install uv and testing tools
         run: |
           python -m pip install uv
+          uv venv --python 3.12
           uv pip install pytest pytest-asyncio
 
       - name: Install core from TestPyPI using uv
@@ -115,6 +117,7 @@ jobs:
       - name: Install uv & tooling
         run: |
           python -m pip install uv
+          uv venv --python 3.12
           uv pip install pytest pytest-asyncio
 
       - name: Install new core from TestPyPI using uv (for plugin builds/tests)
@@ -152,6 +155,7 @@ jobs:
       - name: Install uv & test tools
         run: |
           python -m pip install uv
+          uv venv --python 3.12
           uv pip install pytest pytest-asyncio
 
       - name: Install core and plugins from TestPyPI using uv