Run pgindent with new pg_bsd_indent version 2.1.1.

Thomas Munro fixed a longstanding annoyance in pg_bsd_indent, that
it would misformat lines containing IsA() macros on the assumption
that the IsA() call should be treated like a cast.  This improves
some other cases involving field/variable names that match typedefs,
too.  The only places that get worse are a couple of uses of the
OpenSSL macro STACK_OF(); we'll gladly take that trade-off.

Discussion: https://postgr.es/m/20200114221814.GA19630@alvherre.pgsql

src/tools/pgindent/pgindent

@@ -12,7 +12,7 @@ use IO::Handle;
 use Getopt::Long;
 
 # Update for pg_bsd_indent version
-my $INDENT_VERSION = "2.1";
+my $INDENT_VERSION = "2.1.1";
 
 # Our standard indent settings
 my $indent_opts =
@@ -79,7 +79,7 @@ sub check_indent
 		exit 1;
 	}
 
-	if (`$indent --version` !~ m/ $INDENT_VERSION$/)
+	if (`$indent --version` !~ m/ $INDENT_VERSION /)
 	{
 		print STDERR
 		  "You do not appear to have $indent version $INDENT_VERSION installed on your system.\n";