build: 32 bit linux ci

* in vector testsuite replaced EQUAL with DELTA for float comparison
* on linux use appsettings for testing
* botan deprecated warning
* template error in cxxtest

src/lib_gui/qt/window/QtStartScreen.cpp

@@ -72,7 +72,7 @@ void QtRecentProjectButton::handleButtonClick()
 			emit updateButtons();
 		}
 	}
-};
+}
 
 
 QtStartScreen::QtStartScreen(QWidget *parent)