Unpin uv version in docs workflows (#205)

Follow up to #203. We rely on `[tool.uv.required-version]` as the source
of truth for uv version.

Author: manzt

.github/workflows/docs.yml

@@ -28,9 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: astral-sh/setup-uv@v6
-        with:
-          version: "0.5.x"
+      - uses: astral-sh/setup-uv@v7
 
       - run: uv run docs/build.py
 

.github/workflows/docs_s3.yml

@@ -16,9 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: astral-sh/setup-uv@v6
-        with:
-          version: "0.5.x"
+      - uses: astral-sh/setup-uv@v7
 
       - run: uv run docs/build.py