ci: bump Go toolchain to 1.25 after x/net dependency update Dependabot raised go.mod to go 1.25.0; align CI, Docker, and local build scripts so App Builder no longer fails with GOTOOLCHAIN=local. Bump version to 1.5.20.
ci: bump Go toolchain to 1.25 after x/net dependency update Dependabot raised go.mod to go 1.25.0; align CI, Docker, and local build scripts so App Builder no longer fails with GOTOOLCHAIN=local. Bump version to 1.5.20.