fix(filesystem): Update mingw version used for Windows builds and wor…

…karound a bug in std::filesystem::copy (endless-sky#10910)

* Update mingw due to issues in std::filesystem relating to unicode characters in paths in previous versions.
* On Windows, Files::Copy will delete the file at the destination, if one exists, before calling std::filesystem::copy as that function does not respect the passed parameter instructing it to overwrite an existing file no Windows at the moment.

.github/workflows/cd.yaml

@@ -58,7 +58,7 @@ jobs:
 
   cd_windows_x64:
     name: Windows
-    runs-on: windows-2022
+    runs-on: windows-2025
     env:
       OUTPUT: EndlessSky-win64-continuous.zip
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/cd_release.yaml

@@ -44,7 +44,7 @@ jobs:
 
   release_windows_x64:
     name: Windows x64
-    runs-on: windows-2022
+    runs-on: windows-2025
     env:
       OUTPUT: EndlessSky-win64-${{ inputs.release_version }}.zip
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/ci.yml

@@ -121,7 +121,7 @@ jobs:
     name: Windows
     needs: changed
     if: ${{ needs.changed.outputs.game_code == 'true' || needs.changed.outputs.unit_tests == 'true' || needs.changed.outputs.cmake_files == 'true' || needs.changed.outputs.ci_config == 'true' }}
-    runs-on: windows-2022
+    runs-on: windows-2025
     env:
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
@@ -164,7 +164,7 @@ jobs:
     name: Windows Clang
     needs: changed
     if: ${{ needs.changed.outputs.game_code == 'true' || needs.changed.outputs.unit_tests == 'true' || needs.changed.outputs.cmake_files == 'true' || needs.changed.outputs.ci_config == 'true' }}
-    runs-on: windows-2022
+    runs-on: windows-2025
     env:
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
@@ -287,7 +287,7 @@ jobs:
     needs: [changed, build_windows]
     name: Data Files
     if: ${{ (needs.changed.outputs.game_code == 'true' || needs.changed.outputs.cmake_files == 'true' || needs.changed.outputs.data == 'true' || needs.changed.outputs.integration_tests == 'true' || needs.changed.outputs.ci_config == 'true') && always() }}
-    runs-on: windows-2022
+    runs-on: windows-2025
     env:
       CONTINUOUS: EndlessSky-win64-continuous.zip
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

source/Files.cpp

@@ -298,6 +298,12 @@ time_t Files::Timestamp(const filesystem::path &filePath)
 
 void Files::Copy(const filesystem::path &from, const filesystem::path &to)
 {
+#ifdef _WIN32
+	// Due to a mingw bug, the overwrite_existing flag is not respected on Windows.
+	// TODO: remove once it is fixed.
+	if(Exists(to))
+		Delete(to);
+#endif
 	copy(from, to, filesystem::copy_options::overwrite_existing);
 }