Update support matrix after releasing Bazel 7.5.0.

PiperOrigin-RevId: 721511403
Change-Id: Iead8c15558b76eec93008b1c90d24810d86cfd07

site/en/release/index.md

@@ -18,7 +18,7 @@ information about Bazel's release model.
 | ----------- | ------------- | -------------- | -------------- |
 | Bazel 9 | Rolling| [Check rolling release page](/release/rolling) | N/A |
 | Bazel 8 | Active| [8.0.1](https://github.com/bazelbuild/bazel/releases/tag/8.0.1){: .external} | December 2027 |
-| Bazel 7 | Maintenance| [7.4.1](https://github.com/bazelbuild/bazel/releases/tag/7.4.1){: .external} | Dec 2026 |
+| Bazel 7 | Maintenance| [7.5.0](https://github.com/bazelbuild/bazel/releases/tag/7.5.0){: .external} | Dec 2026 |
 | Bazel 6 | Maintenance | [6.5.0](https://github.com/bazelbuild/bazel/releases/tag/6.5.0){: .external} | Dec 2025 |
 | Bazel 5 | Maintenance | [5.4.1](https://github.com/bazelbuild/bazel/releases/tag/5.4.1){: .external} | Jan 2025 |
 | Bazel 4 | Deprecated | [4.2.4](https://github.com/bazelbuild/bazel/releases/tag/4.2.4){: .external} | Jan 2024 |