feat(deps): update dependency gradle to v8.6 (#278)

| datasource     | package | from | to  |
| -------------- | ------- | ---- | --- |
| gradle-version | gradle  | 8.5  | 8.6 |

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Dockerfile

@@ -51,7 +51,7 @@ ARG APT_HTTP_PROXY
 RUN install-tool java 17.0.10+7
 
 # renovate: datasource=gradle-version
-RUN install-tool gradle 8.5
+RUN install-tool gradle 8.6
 
 # renovate: datasource=github-releases packageName=containerbase/erlang-prebuild versioning=docker
 RUN install-tool erlang 26.2.3.0