fix(ci): update Go version to 1.25 to match go.mod requirement

Author: Fokir

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.23'
+          go-version: '1.25'
 
       - name: Create frontend placeholder
         run: |
@@ -43,7 +43,7 @@ jobs:
 
       - uses: actions/setup-go@v6
         with:
-          go-version: '1.23'
+          go-version: '1.25'
 
       - uses: actions/setup-node@v6
         with: