module: add COM0 and LPT0 to badWindowsNames

They have been added to the list of file names that are disallowed on
Windows that's referenced in the comment to badWindowsNames, so add
them to badWindowsNames.

For golang/go#67238
For golang/go#66625

Change-Id: I82e5d70f33330f746783fd22090a3ebaf9408dfc
Reviewed-on: https://go-review.googlesource.com/c/mod/+/583836
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>

module/module.go

@@ -506,6 +506,7 @@ var badWindowsNames = []string{
 	"PRN",
 	"AUX",
 	"NUL",
+	"COM0",
 	"COM1",
 	"COM2",
 	"COM3",
@@ -515,6 +516,7 @@ var badWindowsNames = []string{
 	"COM7",
 	"COM8",
 	"COM9",
+	"LPT0",
 	"LPT1",
 	"LPT2",
 	"LPT3",