Github actions: Update install-qt-action to version 3

Fixes deprecation warning in build process:

"Node.js 12 actions are deprecated. For more information see:
https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/.
Please update the following actions to use Node.js 16: actions/checkout,
jurplel/install-qt-action, actions/cache,
EthanSK/git-branch-name-action, actions/cache, actions/checkout"

.github/workflows/linux_debug.yml

@@ -28,7 +28,7 @@ jobs:
           submodules: recursive
 
       - name: Install Qt
-        uses: jurplel/install-qt-action@v2
+        uses: jurplel/install-qt-action@v3
         with:
           version:      ${{ env.QT_VERSION }}
           host:         linux

.github/workflows/linux_release.yml

@@ -37,7 +37,7 @@ jobs:
           git fetch --all --tags -f
 
       - name: Install Qt
-        uses: jurplel/install-qt-action@v2
+        uses: jurplel/install-qt-action@v3
         with:
           version:      ${{ env.QT_VERSION }}
           host:         linux

.github/workflows/windows_release.yml

@@ -37,7 +37,7 @@ jobs:
           git fetch --all --tags -f
 
       - name: Install Qt
-        uses: jurplel/install-qt-action@v2
+        uses: jurplel/install-qt-action@v3
         with:
           version:      ${{ env.QT_VERSION }}
           host:         windows