core: bump astral-sh/uv from 0.7.5 to 0.7.6 (#14580)

Bumps [astral-sh/uv](https://github.com/astral-sh/uv) from 0.7.5 to 0.7.6.
- [Release notes](https://github.com/astral-sh/uv/releases)
- [Changelog](https://github.com/astral-sh/uv/blob/main/CHANGELOG.md)
- [Commits](https://github.com/astral-sh/uv/compare/0.7.5...0.7.6)

---
updated-dependencies:
- dependency-name: astral-sh/uv
  dependency-version: 0.7.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -94,7 +94,7 @@ RUN --mount=type=secret,id=GEOIPUPDATE_ACCOUNT_ID \
     /bin/sh -c "GEOIPUPDATE_LICENSE_KEY_FILE=/run/secrets/GEOIPUPDATE_LICENSE_KEY /usr/bin/entry.sh || echo 'Failed to get GeoIP database, disabling'; exit 0"
 
 # Stage 5: Download uv
-FROM ghcr.io/astral-sh/uv:0.7.5 AS uv
+FROM ghcr.io/astral-sh/uv:0.7.6 AS uv
 # Stage 6: Base python image
 FROM ghcr.io/goauthentik/fips-python:3.13.3-slim-bookworm-fips AS python-base