chore(deps): update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/release_map_builder.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: "Checkout repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Restore & build project"
         run: |
           dotnet build -c Release ./src/AITSYS.RpgMakerMv.MapInfos/AITSYS.RpgMakerMv.MapInfos.csproj

.github/workflows/release_rpc.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: "Checkout repository"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: "Restore & build project"
         run: |
           dotnet build -c Release ./src/AITSYS.RpgMakerMv.Rpc/AITSYS.RpgMakerMv.Rpc.csproj