Update CI: Go 1.25/1.26 and latest GitHub Actions

mattn · mattn · commit 551a1d06ad87 · 2026-04-13T23:35:09.000+09:00
macos-latest now uses ARM64 which has no Go 1.14/1.15 binaries.
Also update checkout, setup-go, and codecov actions to latest.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -11,13 +11,13 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go: ["1.14", "1.15"]
+        go: ["1.25", "1.26"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-go@v2
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go }}
       - run: |
           go test -cover -coverprofile coverage.txt -race -v ./...
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v4
