Update to Go 1.13.15

go1.13.15 (released 2020/08/06) includes security fixes to the encoding/binary
package. See the Go 1.13.15 milestone on the issue tracker for details:

https://github.com/golang/go/issues?q=milestone%3AGo1.13.15+label%3ACherryPickApproved

Update to Go 1.13.14

go1.13.14 (released 2020/07/16) includes fixes to the compiler, vet, and the
database/sql, net/http, and reflect packages. See the Go 1.13.14 milestone on
the issue tracker for details:

https://github.com/golang/go/issues?q=milestone%3AGo1.13.14+label%3ACherryPickApproved

Update to Go 1.13.13

go1.13.13 (released 2020/07/14) includes security fixes to the crypto/x509 and
net/http packages. See the Go 1.13.13 milestone on the issue tracker for details.

https://github.com/golang/go/issues?q=milestone%3AGo1.13.13+label%3ACherryPickApproved

Update to Go 1.13.12

go1.13.12 (released 2020/06/01) includes fixes to the runtime, and the go/types
and math/big packages. See the Go 1.13.12 milestone on the issue tracker for details:

https://github.com/golang/go/issues?q=milestone%3AGo1.13.12+label%3ACherryPickApproved

Update to Go 1.13.11

go1.13.11 (released 2020/05/14) includes fixes to the compiler. See the
Go 1.13.11 milestone on the issue tracker for details:

https://github.com/golang/go/issues?q=milestone%3AGo1.13.11+label%3ACherryPickApproved

Update to Go 1.13.10

go1.13.10 (released 2020/04/08) includes fixes to the go command, the runtime,
os/exec, and time packages. See the Go 1.13.10 milestone on the issue tracker
for details:

https://github.com/golang/go/issues?q=milestone%3AGo1.13.10+label%3ACherryPickApproved