build: adopt Go 1.24 as bootstrap toolchain for Go 1.26

[dmitshur]

This is the tracking issue for the Go 1.26 iteration of proposal #54265.

[gabyhelp]

Related Issues and Documentation

• build: adopt Go 1.22 as bootstrap toolchain for Go 1.24 #64751

_{(Emoji vote if this was helpful or unhelpful; more detailed feedback welcome in this discussion.)}