update to go 1.21.8, 1.22.1

See https://groups.google.com/g/golang-announce/c/5pwGVUPoMbg

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

.github/workflows/ci.yml

@@ -188,7 +188,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04, actuated-arm64-4cpu-16gb, macos-12, windows-2019, windows-2022]
-        go-version: ["1.21.6", "1.22.0"]
+        go-version: ["1.21.8", "1.22.1"]
     steps:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/install-go

.github/workflows/release.yml

@@ -13,7 +13,7 @@ on:
 name: Release
 
 env:
-  GO_VERSION: "1.21.6"
+  GO_VERSION: "1.21.8"
 
 permissions: # added using https://github.com/step-security/secure-workflows
   contents: read