tests CI fix - uv installs python 3.12 now

Author: HardMax71

.github/workflows/mypy.yml

@@ -20,9 +20,10 @@ jobs:
           enable-cache: true
           cache-dependency-glob: "backend/uv.lock"
 
-      - name: Install dependencies
+      - name: Install Python and dependencies
         run: |
           cd backend
+          uv python install 3.12
           uv sync --frozen
 
       - name: Run mypy

.github/workflows/ruff.yml

@@ -20,6 +20,12 @@ jobs:
           enable-cache: true
           cache-dependency-glob: "backend/uv.lock"
 
+      - name: Install Python and dependencies
+        run: |
+          cd backend
+          uv python install 3.12
+          uv sync --frozen
+
       - name: Run ruff
         run: |
           cd backend

.github/workflows/tests.yml

@@ -177,9 +177,10 @@ jobs:
           enable-cache: true
           cache-dependency-glob: "backend/uv.lock"
 
-      - name: Install Python test dependencies
+      - name: Install Python and dependencies
         run: |
           cd backend
+          uv python install 3.12
           uv sync --frozen
 
       - name: Run backend tests with coverage