[qtbase] Add missing "egl1" related system package for linux target (#36023)

Allow to fix issue explained at https://github.com/microsoft/vcpkg/issues/35815

ports/qtbase/portfile.cmake

@@ -39,7 +39,7 @@ if(VCPKG_TARGET_IS_LINUX)
     message(WARNING "qtbase currently requires packages from the system package manager. "
     "They can be installed on Ubuntu systems via sudo apt-get install " 
     "'^libxcb.*-dev' libx11-xcb-dev libglu1-mesa-dev libxrender-dev libxi-dev libxkbcommon-dev "
-    "libxkbcommon-x11-dev.")
+    "libxkbcommon-x11-dev libegl1-mesa-dev.")
 endif()
 
 # Features can be found via searching for qt_feature in all configure.cmake files in the source:

ports/qtbase/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "qtbase",
   "version": "6.6.1",
-  "port-version": 4,
+  "port-version": 5,
   "description": "Qt Application Framework Base Module. Includes Core, GUI, Widgets, Networking, SQL, Concurrent and other essential qt components.",
   "homepage": "https://www.qt.io/",
   "license": null,

versions/baseline.json

@@ -7118,7 +7118,7 @@
     },
     "qtbase": {
       "baseline": "6.6.1",
-      "port-version": 4
+      "port-version": 5
     },
     "qtcharts": {
       "baseline": "6.6.1",

versions/q-/qtbase.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "1b947014e92b75d7bf37427fc4a9ce3fd463af2c",
+      "version": "6.6.1",
+      "port-version": 5
+    },
     {
       "git-tree": "7e1dba7994d7d228fee34f8f5b646e7d9aff62ac",
       "version": "6.6.1",