[release-23.0] Upgrade the Golang version to go1.25.10

[vitess-bot]

This Pull Request bumps the Golang version to go1.25.10 and the bootstrap version to 48.4.

Do not trust the bot blindly. A thorough code review must be done to ensure all the files have been correctly modified.

cc @vitessio/release

[vitess-bot]

Hello! 👋

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[vitess-bot]

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[Copilot]

Pull request overview

Updates the Vitess release-23.0 branch build/tooling to use Go 1.25.10 and aligns the Docker bootstrap image versioning to 48.4.

Changes:

• Bump the Go version from 1.25.9 to 1.25.10 in module/build tooling.
• Update bootstrap image version from 48.3 to 48.4 across Makefile + test harness.
• Refresh Docker build base images to golang:1.25.10-bookworm (pinned by digest) and record the change in the bootstrap changelog.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test.go	Updates default -bootstrap-version flag value to 48.4.
Makefile	Bumps BOOTSTRAP_VERSION to 48.4 for bootstrap build/push/test targets.
go.mod	Updates the go directive to 1.25.10.
docker/vttestserver/Dockerfile.mysql84	Updates builder base image to Go 1.25.10 pinned digest.
docker/vttestserver/Dockerfile.mysql80	Updates builder base image to Go 1.25.10 pinned digest.
docker/lite/Dockerfile.percona80	Updates builder base image to Go 1.25.10 pinned digest.
docker/lite/Dockerfile.mysql84	Updates builder base image to Go 1.25.10 pinned digest.
docker/lite/Dockerfile.mysql80	Updates builder base image to Go 1.25.10 pinned digest.
docker/lite/Dockerfile	Updates builder base image to Go 1.25.10 pinned digest.
docker/bootstrap/Dockerfile.common	Updates bootstrap base image to Go 1.25.10 pinned digest.
docker/bootstrap/CHANGELOG.md	Adds bootstrap image version 48.4 entry for the Go bump.
build.env	Updates the recommended minimum Go version check to 1.25.10.

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