Update aqt to use install-qt rather than install.

Author: mhoffman219

tools/ci/for_pip/requirements.txt

@@ -1 +1 @@
-aqtinstall==1.2.3
+aqtinstall==2.0.6

tools/ci/get_qt_libs.sh

@@ -34,7 +34,7 @@ else
 
   if [[ -n ${MYAPP_TEMPLATE_QT6-} ]]; then
     # https://github.com/miurahr/aqtinstall/issues/126 "Installing smaller subset of the libraries"
-    python3 -m aqt install --base "${QTSIXMIRROR}" --outputdir $DL_FOLDER/Qt_desktop 6.0.0 linux desktop --archives \
+    python3 -m aqt install-qt --base "${QTSIXMIRROR}" --outputdir $DL_FOLDER/Qt_desktop linux desktop 6.0.0 --archives \
      icu \
      qtbase \
      qtconnectivity \
@@ -48,12 +48,12 @@ else
 
     # we still need qt5 in order to execute qmlfmt. (until we can recompile qmlfmt with qt6)
     # https://github.com/miurahr/aqtinstall/issues/126 "Installing smaller subset of the libraries"
-    python3 -m aqt install --base "${QTMIRROR}" --outputdir $DL_FOLDER/Qt_desktop 5.15.0 linux desktop --archives \
+    python3 -m aqt install-qt --base "${QTMIRROR}" --outputdir $DL_FOLDER/Qt_desktop linux desktop 5.15.0 --archives \
      icu \
      qtbase
   else
     # https://github.com/miurahr/aqtinstall/issues/126 "Installing smaller subset of the libraries"
-    python3 -m aqt install --base "${QTMIRROR}" --outputdir $DL_FOLDER/Qt_desktop 5.15.0 linux desktop --archives \
+    python3 -m aqt install-qt --base "${QTMIRROR}" --outputdir $DL_FOLDER/Qt_desktop linux desktop 5.15.0 --archives \
      icu \
      qtbase \
      qtconnectivity \

tools/ci/provision_win.sh

@@ -12,10 +12,11 @@ pip3 install -r ${DIR}/for_pip/requirements.txt  # https://github.com/miurahr/aq
 # NOTE: as of Nov 23, 2020, it is not clear whether 'win64_msvc2019_64' is the right ARCH
 # argument to pass to aqtinstall. We may need to try other options:
 #   win64_msvc2017_64, win64_msvc2019_winrt_x64 ?
+# FURTHER: as of Feb 11, 2022, this is untested on windows after switching from install to install-qt
 # Refer to: https://github.com/miurahr/aqtinstall#usage
 
 # https://github.com/miurahr/aqtinstall/issues/126 "Installing smaller subset of the libraries"
-python -m aqt install --outputdir $DL_FOLDER/Qt_desktop 5.15.0 windows desktop win64_msvc2019_64 --archives \
+python -m aqt install-qt --outputdir $DL_FOLDER/Qt_desktop windows desktop 5.15.0 win64_msvc2019_64 --archives \
         icu \
         qtbase \
         qtconnectivity \