ci: run lint on go 1.23

Author: tulir

.github/workflows/go.yml

@@ -8,8 +8,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: ["1.22"]
-    name: Lint ${{ matrix.go-version == '1.22' && '(latest)' || '(old)' }}
+        go-version: ["1.22", "1.23"]
+    name: Lint ${{ matrix.go-version == '1.23' && '(latest)' || '(old)' }}
 
     steps:
       - uses: actions/checkout@v4