Update grafana and graphite versions in benchto-service-docker

[ryanntannn]

sitespeedio/graphite:0.9.14 image is using a deprecated docker image format, causing sample docker compose to fail:

 ⠴ benchto-graphite Pulling                                                                                                                              4.6s 
Docker Image Format v1 and Docker Image manifest version 2, schema 1 support has been removed. Suggest the author of docker.io/sitespeedio/graphite:0.9.14 to upgrade the image to the OCI Format or Docker Image manifest v2, schema 2. More information at https://docs.docker.com/go/deprecated-image-specs/
`docker-compose` process finished with exit code 1

this PR updates docker compose images to sitespeedio/graphite:1.1.10-5 and grafana/grafana:12.1.1, and removed the deprecated version property.

[cla-bot]

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[ryanntannn]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[Copilot]

Pull Request Overview

Updates docker-compose configuration to resolve deprecated image format issues and modernize dependencies. The PR upgrades Grafana and Graphite Docker images to more recent versions and removes the deprecated version property from docker-compose.yml.

• Updated Graphite image from deprecated 0.9.14 to 1.1.10-5
• Updated Grafana image from 4.1.2 to 12.1.1
• Removed deprecated version: '2' property from docker-compose.yml

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
benchto-service-docker/docker-compose.yml	Updates Docker image versions and removes deprecated version property
benchto-service-docker/config/graphite/storage-schemas.conf	Updates retention configuration syntax from 1min to 1m

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