⬆️ Update dependency go to v1.25.0

Author: renovate[bot]

.github/workflows/go.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: 1.21
+        go-version: 1.25
 
     - name: Download
       run: cd envoy_proxy/app && go mod download

envoy_proxy/app/go.mod

@@ -2,7 +2,7 @@ module app
 
 go 1.21
 
-toolchain go1.23.4
+toolchain go1.25.0
 
 require (
 	github.com/envoyproxy/go-control-plane v0.12.0