go.mod: golang.org/x/*: use tagged versions

golang.org/x/oauth2 is not updated due to its complex dependencies

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

vendor/golang.org/x/sys/unix/zsyscall_linux.go

@@ -2151,3 +2151,13 @@ func setitimer(which int, newValue *Itimerval, oldValue *Itimerval) (err error)
 	}
 	return
 }
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func rtSigprocmask(how int, set *Sigset_t, oldset *Sigset_t, sigsetsize uintptr) (err error) {
+	_, _, e1 := RawSyscall6(SYS_RT_SIGPROCMASK, uintptr(how), uintptr(unsafe.Pointer(set)), uintptr(unsafe.Pointer(oldset)), uintptr(sigsetsize), 0, 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}