Update Go version to 1.25.0 in both workflows

- Upgrade from Go 1.20.14 to 1.25.0 for both deployment and PR validation
- Should resolve Hugo module panic issues with newer Go runtime

Author: cloudartisan

.github/workflows/hugo.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5.2.0
         with:
-          go-version: '1.20.14'  # Pin to specific Go version for reproducible builds
+          go-version: '1.25.0'  # Pin to specific Go version for reproducible builds
 
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v2.6.0

.github/workflows/pr-validation.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v5.2.0
         with:
-          go-version: '1.20.14'
+          go-version: '1.25.0'
 
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v2.6.0
@@ -34,7 +34,9 @@ jobs:
           extended: true
 
       - name: Setup Hugo Modules
-        run: hugo mod tidy
+        run: |
+          hugo mod tidy
+          hugo mod get github.com/jpanther/congo/v2@v2.12.2
 
       - name: Validate Hugo Configuration
         run: |