CI: update uv github action and disable cache

Author: daywalker90

.github/workflows/main.yml

@@ -72,7 +72,9 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install uv
-      uses: astral-sh/setup-uv@v6
+      uses: astral-sh/setup-uv@v7
+      with:
+        enable-cache: false
 
     - name: Extract exact python and os version
       id: exact_versions

.github/workflows/nightly.yml

@@ -29,7 +29,9 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install uv
-      uses: astral-sh/setup-uv@v6
+      uses: astral-sh/setup-uv@v7
+      with:
+        enable-cache: false
 
     - name: Download Bitcoin & install binaries
       run: |