lib: strparse.h include where missing

Closes #16348

lib/vquic/vquic.c

@@ -44,6 +44,7 @@
 #include "vquic.h"
 #include "vquic_int.h"
 #include "strerror.h"
+#include "strparse.h"
 
 /* The last 3 #include files should be in this order */
 #include "curl_printf.h"

lib/vssh/libssh.c

@@ -66,6 +66,7 @@
 #include "parsedate.h"          /* for the week day and month names */
 #include "sockaddr.h"           /* required for Curl_sockaddr_storage */
 #include "strtoofft.h"
+#include "strparse.h"
 #include "multiif.h"
 #include "select.h"
 #include "warnless.h"