go: upgrade 1.20.6 -> 1.20.7

Upgrade to latest 1.20.x release [1]:

$ git log --oneline go1.20.6..go1.20.7 origin/release-branch.go1.20
adb775e309 (tag: go1.20.7, origin/release-branch.go1.20) [release-branch.go1.20] go1.20.7
659f2a2207 [release-branch.go1.20] crypto/tls: restrict RSA keys in certificates to <= 8192 bits
10d85fa0f6 [release-branch.go1.20] cmd/asm, cmd/internal/obj: generate proper atomic ops for riscv64
bd3a1f24e7 [release-branch.go1.20] net: tolerate permission errors in interface tests
6211a024b4 [release-branch.go1.20] cmd/compile: on PPC64, fix sign/zero extension when masking

[1] https://github.com/golang/go/compare/go1.20.6...go1.20.7



Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>