[cpp-qt-client] pass QString by const reference instead of by value (#16793)

* [cpp-qt-client] pass QString by const reference instead of by value

* Add another signal instead of changing its signature

* Bump qt version

* Fix CODEOWNERS

* Try to fix workflow

* use v3

* Remove openssl from windows build

---------

Co-authored-by: William Cheng <wing328hk@gmail.com>

.github/CODEOWNERS

@@ -29,7 +29,5 @@ modules/openapi-generator-gradle-plugin/**/* @jimschubert
 modules/openapi-generator-maven-plugin/**/* @jimschubert
 
 # Martin Delille
-/Users/martin/dev/clone/openapi-generator/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQtClientCodegen.java @martindelille
-/Users/martin/dev/clone/openapi-generator/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQtAbstractCodegen.java @martindelille
-/Users/martin/dev/clone/openapi-generator/modules/openapi-generator/src/main/resources/cpp-qt-client @martindelille
-/Users/martin/dev/clone/openapi-generator/samples/client/petstore/cpp-qt @martindelille
+modules/openapi-generator/src/main/resources/cpp-qt-client/**/* @martindelille
+samples/client/petstore/cpp-qt/**/* @martindelille

.github/workflows/samples-cpp-qt-client.yaml

@@ -18,18 +18,16 @@ jobs:
       matrix:
         qt-version:
           - '5.15.2'
-          - '6.4.2'
+          - '6.5.3'
         os:
           - ubuntu-latest
           - macOS-latest
           - windows-latest
-        include:
-          - os: windows-latest
-            tools: 'tools_openssl_x64'
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
-      - uses: jurplel/install-qt-action@v4
+      - name: Install Qt
+        uses: jurplel/install-qt-action@v3
         with:
           version: ${{ matrix.qt-version }}
           tools: ${{ matrix.tools }}