Update dependency go to 1.25

Author: renovate[bot]

.github/workflows/ddnsb0t.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Set up Go 1.16
       uses: actions/setup-go@v5
       with:
-        go-version: 1.16
+        go-version: 1.25
       id: go
 
     - name: Check out code into the Go module directory

.github/workflows/function.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Set up Go 1.16
       uses: actions/setup-go@v5
       with:
-        go-version: 1.16
+        go-version: 1.25
       id: go
 
     - name: Check out code into the Go module directory