insecure fix (It was working backwards) (#26)

I modified setInsecure because it was working backwards.
When setInsecure is true the c_long param must be 0L

Co-authored-by: Javier Orfo <javierorfo@prontonmail.com>

src/Easy.zig

@@ -395,7 +395,7 @@ pub fn setIpResolve(self: Self, ipr: IpResolve) !void {
 }
 
 pub fn setInsecure(self: Self, enable: bool) !void {
-    const param: c_long = @intCast(@intFromBool(enable));
+    const param: c_long = @intCast(@intFromBool(!enable));
     try checkCode(c.curl_easy_setopt(self.handle, c.CURLOPT_SSL_VERIFYPEER, param));
     try checkCode(c.curl_easy_setopt(self.handle, c.CURLOPT_SSL_VERIFYHOST, param));
 }