Pin super-linter script to specific commit (#1879)

## Summary
- Pin the remote `super-linter.sh` URL to commit
`f5d39ffaf01b5bbe815b3821e4e3257db32f49e7` to avoid unexpected breakage
from upstream changes

## Test plan
- [ ] Verify `mise run lint:super-linter` still works correctly

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Author: zeitlinger

mise.toml

@@ -49,7 +49,7 @@ run = "./mvnw install -DskipTests -Dcoverage.skip=true"
 
 [tasks."lint:super-linter"]
 description = "Run Super-Linter with auto-fix on the repository"
-file = "https://raw.githubusercontent.com/grafana/docker-otel-lgtm/main/.mise/tasks/lint/super-linter.sh"
+file = "https://raw.githubusercontent.com/grafana/docker-otel-lgtm/f5d39ffaf01b5bbe815b3821e4e3257db32f49e7/.mise/tasks/lint/super-linter.sh"
 
 [tasks."lint:links"]
 file = "https://raw.githubusercontent.com/open-telemetry/opentelemetry-java-contrib/refs/heads/main/.mise/tasks/lint/links.sh"