Update dependencies in pianobooster according to new best practices

pianobooster/default/PKGBUILD

@@ -2,9 +2,9 @@ _pkgname=pianobooster
 pkgname=pianobooster
 pkgdesc='A MIDI file player that teaches you how to play the piano (with custom, experimental patches)'
 pkgver=1392.86ce9b0
-pkgrel=1
-depends=('ftgl' 'hicolor-icon-theme' 'qt6-base' 'libfluidsynth.so' 'librtmidi.so' 'libqtutilities-git.so')
-makedepends=('git' 'cmake' 'clang' 'qt6-tools' 'qt6-declarative' 'ninja')
+pkgrel=2
+depends=('ftgl' 'hicolor-icon-theme' 'qt6-base' 'libfluidsynth.so' 'librtmidi.so' 'qtutilities-qt6')
+makedepends=('git' 'cmake' 'clang' 'qt6-tools' 'qt6-declarative' 'ninja' 'c++utilities')
 optdepends=('qt6-translations')
 arch=('x86_64')
 url='https://github.com/Martchus/PianoBooster'
@@ -24,14 +24,15 @@ build () {
         -DUSE_SYSTEM_FONT=ON \
         -DUSE_JACK=ON \
         -DWITH_INTERNAL_FLUIDSYNTH=ON \
-        -DCONFIGURATION_PACKAGE_SUFFIX=-git \
-        -DCONFIGURATION_PACKAGE_SUFFIX_QTUTILITIES=-git \
+        -DCONFIGURATION_PACKAGE_SUFFIX= \
+        -DCONFIGURATION_PACKAGE_SUFFIX_QTUTILITIES=-qt6 \
         -DBUILTIN_TRANSLATIONS:BOOL=ON \
         -DQT_PACKAGE_PREFIX=Qt6 \
         -DWITH_MAN=ON
   VERBOSE=1 cmake --build build
 }
 
 package () {
+  depends+=('libqtutilities-qt6.so')
   DESTDIR="$pkgdir" cmake --install build
 }