Bump version to v1.3.1

Author: WerWolv

example/source/main.cpp

@@ -7,7 +7,7 @@ class GuiSecondary : public tsl::Gui {
     GuiSecondary() {}
 
     virtual tsl::elm::Element* createUI() override {
-        auto *rootFrame = new tsl::elm::OverlayFrame("Tesla Example", "v1.3.0 - Secondary Gui");
+        auto *rootFrame = new tsl::elm::OverlayFrame("Tesla Example", "v1.3.1 - Secondary Gui");
 
         rootFrame->setContent(new tsl::elm::DebugRectangle(tsl::gfx::Color{ 0x8, 0x3, 0x8, 0xF }));