fix: Fixed some compiler warnings (#5028)

* fix(C4101): unreferenced local variable

* fix(C4189): variable initialized but not referenced

* fix(C4305): narrowing from double to float

* fix(C4457): declaration hiding function parameter

* fix(C4456): shadowing declaration

* fix(C4996): remove deprecations

* chore: add changelog entry

* fix: Remove more unused variables

* fix: removed unused lambda captures

* Update changelog entry

---------

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/util/AttachToConsole.cpp

@@ -3,7 +3,7 @@
 #ifdef USEWINSDK
 #    include <Windows.h>
 
-#    include <iostream>
+#    include <tuple>
 #endif
 
 namespace chatterino {
@@ -13,8 +13,8 @@ void attachToConsole()
 #ifdef USEWINSDK
     if (AttachConsole(ATTACH_PARENT_PROCESS))
     {
-        freopen("CONOUT$", "w", stdout);
-        freopen("CONOUT$", "w", stderr);
+        std::ignore = freopen_s(nullptr, "CONOUT$", "w", stdout);
+        std::ignore = freopen_s(nullptr, "CONOUT$", "w", stderr);
     }
 #endif
 }