[libpq]fix windows build failure (microsoft#19031)

* fix windows build failure

fix Could not find debug or release binaries at libpq\x64-windows-rel\src\tools\msvc/Install.pm line 77.

* Update libpq.json

ports/libpq/patches/windows/install.patch

@@ -2,6 +2,25 @@ diff --git a/src/tools/msvc/Install.pm b/src/tools/msvc/Install.pm
 index d109b2c90..75c7446e6 100644
 --- a/src/tools/msvc/Install.pm
 +++ b/src/tools/msvc/Install.pm
+@@ -63,8 +63,16 @@ sub Install
+ 		do "./config.pl" if (-f "config.pl");
+ 	}
+
+-	chdir("../../..")    if (-f "../../../configure");
+-	chdir("../../../..") if (-f "../../../../configure");
++	# Move to the root path depending on the current location.
++	if (-f "../../../configure")
++	{
++		chdir("../../..");
++	}
++	elsif (-f "../../../../configure")
++	{
++		chdir("../../../..");
++	}
++
+ 	my $conf = "";
+ 	if (-d "debug")
+ 	{
 @@ -106,7 +106,7 @@ sub Install
  			}
  		},

ports/libpq/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "libpq",
   "version": "12.2",
-  "port-version": 17,
+  "port-version": 18,
   "description": "The official database access API of postgresql",
   "homepage": "https://www.postgresql.org/",
   "supports": "!uwp",

versions/baseline.json

@@ -3478,7 +3478,7 @@
     },
     "libpq": {
       "baseline": "12.2",
-      "port-version": 17
+      "port-version": 18
     },
     "libpqxx": {
       "baseline": "7.3.1",

versions/l-/libpq.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "03c934a8004ec6c34842748d18c06a38e7a8aa3e",
+      "version": "12.2",
+      "port-version": 18
+    },
     {
       "git-tree": "01e2ad37b9df46e45826e52a6cddfb95ca137abd",
       "version": "12.2",