Provisioning: Update Squish for Qt6

These are snapshot packages from Froglogic, not available for macOS yet,
thus it will still use Qt5.15 based Squish. Only Linux and Win packages
are updated now.
Along with the Squish for Qt6 we need the Squish for Qt5 to be able to
run Creator tests (since Creator is still Qt5 based).

Change-Id: Iec0294e1de036db004633ee6b95e1e68a6dd23a5
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Heikki Halmet <heikki.halmet@qt.io>
(cherry picked from commit d86303a561)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

coin/provisioning/common/windows/squishInstall.ps1

@@ -36,12 +36,12 @@
 # This script will pre-installed squish package for Windows.
 # Squish is need by Release Test Automation (RTA)
 
-$version = "6.6.1"
-$qtBranch = "515x"
+$version = "6.7-20210112-1612"
+$qtBranch = "60x"
 $targetDir = "C:\Utils\squish"
 $squishPackage = "C:\Utils\rta_squish"
 $squishUrl = "\\ci-files01-hki.intra.qt.io\provisioning\squish\jenkins_build\stable"
-$licenseUrl = "\\ci-files01-hki.intra.qt.io\provisioning\squish\coin"
+$licenseUrl = "\\ci-files01-hki.intra.qt.io\provisioning\squish\coin\515x"
 
 # Squish license
 $licensePackage = ".squish-3-license"
@@ -60,7 +60,7 @@ $OSVersion = (get-itemproperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\Curren
 if ($OSVersion -eq "Windows 10 Enterprise") {
     $winVersion = "win10"
     if (Is64BitWinHost) {
-        $sha1 = "17b5bec83f448877e42e5effdc7daf723d157800"
+        $sha1 = "628bb65cf515d08df388b0dc4d5b403e4c6657b2"
     } else {
         $sha1 = "9c0fc186605522ac0ac11066c10c3f3e8a95a705"
         #Remove special handling when all packages are in same dir, exception now for win10 x86->the archive had to be rebuild