Update docker.io/grafana/grafana Docker tag to v12.4.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker.io/grafana/grafana	Kustomization	patch	12.4.4 → 12.4.8

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Release Notes

grafana/grafana (docker.io/grafana/grafana)

v12.4.8: 12.4.8

Download page
What's new highlights

v12.4.7: 12.4.7

Download page
What's new highlights

Features and enhancements

• Dashboards: Get annotations and dashboard endpoint performance improvements #​129780, @​filewalkwithme

Bug fixes

• DashboardDS: Fix Mixed panels with a time override stuck in permanent loading #​129289, @​oscarkilhed

v12.4.6: 12.4.6

Download page
What's new highlights

Features and enhancements

• Alerting: Add protected fields authorization check to provisioning API #​127940, @​grafana-writer[bot]
• Alerting: Return 403 instead of 500 on contact point provenance mismatch #​127814, @​rwwiv
• Go: Update version to 1.26.5 #​128017, @​macabu

Bug fixes

• Jaeger: Handle gzip, deflate, and brotli compressed API responses #​128062, @​zoltanbedi
• alerting: fix ORM table mapping bug causing SELECT alert_rule columns FROM user on PostgreSQL #​128753, @​dhananjay6561

v12.4.5

Features and enhancements

• Docker: Bump Alpine-based images to 3.24.1 #​126538, @​macabu

Bug fixes

• Datasources: return 400 when payload UID does not match URL UID in PUT /api/datasources/uid/:uid #​125769, @​papagian

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