Go 1.21.0

https://go.dev/doc/go1.21

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

.github/workflows/build-test-images.yml

@@ -43,7 +43,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: "1.20.7"
+          go-version: "1.21.0"
 
       - uses: actions/checkout@v3
         with:

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ on:
 env:
   # Go version we currently use to build containerd across all CI.
   # Note: don't forget to update `Binaries` step, as it contains the matrix of all supported Go versions.
-  GO_VERSION: "1.20.7"
+  GO_VERSION: "1.21.0"
 
 permissions: # added using https://github.com/step-security/secure-workflows
   contents: read
@@ -209,7 +209,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04, macos-12, windows-2019, windows-2022]
-        go-version: ["1.20.7", "1.19.12"]
+        go-version: ["1.20.7", "1.21.0"]
     steps:
       - uses: actions/setup-go@v4
         with:

.github/workflows/codeql.yml

@@ -34,7 +34,7 @@ jobs:
 
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.20.7
+          go-version: 1.21.0
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/fuzz.yml

@@ -58,8 +58,6 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          # FIXME: go-fuzz fails with Go 1.20: `cgo_unix_cgo_res.cgo2.c:(.text+0x32): undefined reference to `__res_search'`
-          # https://github.com/containerd/containerd/pull/8103#issuecomment-1429256152
-          go-version: 1.18
+          go-version: 1.21.x
       - uses: actions/checkout@v3
       - run: script/go-test-fuzz.sh

.github/workflows/images.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: "1.20.7"
+          go-version: "1.21.0"
 
       - uses: actions/checkout@v3
         with:

.github/workflows/nightly.yml

@@ -7,7 +7,7 @@ on:
       - ".github/workflows/nightly.yml"
 
 env:
-  GO_VERSION: "1.20.7"
+  GO_VERSION: "1.21.0"
 
 permissions: # added using https://github.com/step-security/secure-workflows
   contents: read

.github/workflows/release.yml

@@ -13,7 +13,7 @@ on:
 name: Release
 
 env:
-  GO_VERSION: "1.20.7"
+  GO_VERSION: "1.21.0"
 
 permissions: # added using https://github.com/step-security/secure-workflows
   contents: read