Removed win 2019 builds since github runner has no more support (#1345)

Removed win 2019 builds since github runner has no more support for it.
It causes error:

```
[Windows (msvc-2019_boost_1730, 32, Debug, Static, noSSL)](https://github.com/hazelcast/hazelcast-cpp-client/actions/runs/18767708699/job/53545840295)
Windows Server 2019 has been retired. The Windows Server 2019 image has been removed as of 2025-06-30. For more details, see actions/runner-images#12045
```

e.g. build
[here](https://github.com/hazelcast/hazelcast-cpp-client/actions/runs/18767708699)

Author: ihsandemir

.github/workflows/nightly-windows.yml

@@ -20,24 +20,12 @@ jobs:
       fail-fast: false
       matrix:
         vc_boost:
-          - name: msvc-2019_boost_1730
-            image: 'windows-2019'
+          - name: msvc-latest_boost_1730
+            image: 'windows-latest'
             boost_url: 'https://archives.boost.io/release/1.73.0/source/boost_1_73_0.tar.gz'
             boost_archive_name: 'boost_1_73_0.tar.gz'
             boost_folder_name: 'boost_1_73_0'
             boost_include_folder: 'C:\Boost\include\boost-1_73'
-          - name: msvc-2019_boost_1890
-            image: 'windows-2019'
-            boost_url: 'https://archives.boost.io/release/1.89.0/source/boost_1_89_0.tar.gz'
-            boost_archive_name: 'boost_1_89_0.tar.gz'
-            boost_folder_name: 'boost_1_89_0'
-            boost_include_folder: 'C:\Boost\include\boost-1_89'
-          - name: msvc-2022_boost_1890
-            image: 'windows-2022'
-            boost_url: 'https://archives.boost.io/release/1.89.0/source/boost_1_89_0.tar.gz'
-            boost_archive_name: 'boost_1_89_0.tar.gz'
-            boost_folder_name: 'boost_1_89_0'
-            boost_include_folder: 'C:\Boost\include\boost-1_89'
           - name: msvc-latest_boost_1890
             image: 'windows-latest'
             boost_url: 'https://archives.boost.io/release/1.89.0/source/boost_1_89_0.tar.gz'