chore: release 0.48.0

[sm-release-app]

🤖 I have created a release beep boop

0.48.0 (2025-11-27)

Features

• add feature flag for protocol secrets support (#1626) (a9ee905)
• prober/traceroute: log traceroute entries in increasing hop order (14bc512)
• Pull cost attribution labels for tenant (#1544) (58c6cf2)
• Rework tenant cache (#1601) (b51599d)

Fixes

• iterate over slice values, not indexes (83d539c)
• Prevent datarace in telemetry tests (#1628) (09b57ab)

Miscellaneous Chores

• Update actions/checkout action to v6 (#1624) (068ad9d)
• Update actions/create-github-app-token action to v2.2.0 (#1629) (d3d6019)
• Update actions/setup-go action to v6.1.0 (#1623) (226a8a6)
• Update dependency grafana/xk6-sm to v0.6.12 (#1622) (560c7b2)
• Update docker:dind Docker digest to c9699f4 (#1616) (8fb6109)
• Update ghcr.io/grafana/chromium-swiftshader-alpine:142.0.7444.59-r0-3.22.2 Docker digest to 2e68718 (#1630) (fa48ab6)
• Update ghcr.io/grafana/chromium-swiftshader-alpine:142.0.7444.59-r0-3.22.2 Docker digest to 4bfff84 (af8f861)
• Update ghcr.io/grafana/grafana-build-tools Docker tag to v1.23.1 (42b8fb5)
• Update grafana/shared-workflows digest to b055806 (#1625) (6f0797f)
• Update module google.golang.org/grpc to v1.77.0 (#1620) (e51905f)

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