build(deps): bump astral-sh/setup-uv from 6 to 7

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 6 to 7.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v6...v7)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/tox.yml

@@ -29,7 +29,7 @@ jobs:
       SHA: ${{ steps.test-head.outputs.SHA }}
     steps:
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@v7
       - name: Git settings (pacify DataLad)
         run: |
           git config --global user.name 'NiPreps Bot'
@@ -87,7 +87,7 @@ jobs:
           submodules: recursive
           fetch-depth: 0
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@v7
       - uses: actions/cache/restore@v4
         with:
           path: ${{ env.TEST_DATA_HOME }}
@@ -120,7 +120,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@v6
+        uses: astral-sh/setup-uv@v7
       - name: Show tox config
         run: uvx tox c
       - name: Show tox config (this call)