[chore] Address GitHub's brownout of windows-2019 runners (#6285)

Author: crobert-1

.github/workflows/otelcol-fips.yml

@@ -134,7 +134,7 @@ jobs:
     needs: [ otelcol-fips ]
     strategy:
       matrix:
-        WIN_VERSION: [ 2019, 2022 ]
+        WIN_VERSION: [ 2022, 2025 ]
       fail-fast: false
     steps:
       - uses: actions/checkout@v4

.github/workflows/vuln-scans.yml

@@ -159,7 +159,7 @@ jobs:
     needs: [ "binaries-windows_amd64" ]
     strategy:
       matrix:
-        OS: [ windows-2019, windows-2022 ]
+        OS: [ windows-2022, windows-2025 ]
       fail-fast: false
     env:
       PIP_CACHE_DIR: ${{ github.workspace }}/.cache/pip
@@ -181,8 +181,8 @@ jobs:
           $ErrorActionPreference = 'Stop'
           Copy-Item .\bin\otelcol_windows_amd64.exe .\cmd\otelcol\otelcol.exe
           Copy-Item .\dist\agent-bundle_windows_amd64.zip .\cmd\otelcol\agent-bundle_windows_amd64.zip
-          if ("${{ matrix.OS }}" -eq "windows-2019") {
-            $base_image = "mcr.microsoft.com/windows/servercore:ltsc2019"
+          if ("${{ matrix.OS }}" -eq "windows-2025") {
+            $base_image = "mcr.microsoft.com/windows/servercore:ltsc2025"
           } else {
             $base_image = "mcr.microsoft.com/windows/servercore:ltsc2022"
           }

deployments/chef/kitchen.windows.yml

@@ -19,14 +19,14 @@ verifier:
   name: inspec
 
 platforms:
-  - name: windows-2019
+  - name: windows-2022
     driver:
-      dockerfile: test/windows/Dockerfile.windows-2019
+      dockerfile: test/windows/Dockerfile.windows-2022
       build_context: true
       platform: windows
-  - name: windows-2022
+  - name: windows-2025
     driver:
-      dockerfile: test/windows/Dockerfile.windows-2022
+      dockerfile: test/windows/Dockerfile.windows-2025
       build_context: true
       platform: windows
 

deployments/chef/test/windows/Dockerfile.windows-2019 renamed to deployments/chef/test/windows/Dockerfile.windows-2025

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/windows/servercore:ltsc2019
+FROM mcr.microsoft.com/windows/servercore:ltsc2025
 
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]