fix test.yaml

Author: mattn

.github/workflows/test.yaml

@@ -12,11 +12,9 @@ jobs:
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
         go:
-          - "1.22"
-          - "1.21"
-          - "1.20"
-          - "1.19"
-          - "1.18"
+          - "1.25"
+          - "1.24"
+          - "1.23"
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3