Extract a composite action to install Go

Signed-off-by: Maksym Pavlenko <pavlenko.maksym@gmail.com>

.github/actions/install-go/action.yml

@@ -0,0 +1,16 @@
+name: "Setup Go"
+description: "Reusable action to install Go, so there is one place to bump Go versions"
+inputs:
+  go-version:
+    required: true
+    default: "1.21.6"
+    description: "Go version to install"
+
+runs:
+  using: composite
+  steps:
+    - name: "Setup Go"
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ inputs.go-version }}
+        cache: false # see actions/setup-go#368

.github/workflows/ci.yml

@@ -6,11 +6,6 @@ on:
   pull_request:
     branches: ['main', 'release/**']
 
-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: "1.21.6"
-
 permissions: # added using https://github.com/step-security/secure-workflows
   contents: read
 
@@ -31,12 +26,8 @@ jobs:
         os: [ubuntu-22.04, actuated-arm64-4cpu-16gb, macos-12, windows-2019]
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
-
       - uses: actions/checkout@v4
+      - uses: ./.github/actions/install-go
       - uses: golangci/golangci-lint-action@v3
         with:
           version: v1.55.2
@@ -53,16 +44,13 @@ jobs:
     timeout-minutes: 5
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
-
       - uses: actions/checkout@v4
         with:
           path: src/github.com/containerd/containerd
           fetch-depth: 100
 
+      - uses: ./src/github.com/containerd/containerd/.github/actions/install-go
+
       - uses: containerd/project-checks@v1.1.0
         with:
           working-directory: src/github.com/containerd/containerd
@@ -87,15 +75,12 @@ jobs:
         working-directory: src/github.com/containerd/containerd
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
-
       - uses: actions/checkout@v4
         with:
           path: src/github.com/containerd/containerd
 
+      - uses: ./src/github.com/containerd/containerd/.github/actions/install-go
+
       - name: Set env
         shell: bash
         run: |
@@ -120,11 +105,8 @@ jobs:
     timeout-minutes: 5
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
       - uses: actions/checkout@v4
+      - uses: ./.github/actions/install-go
       - run: go install github.com/cpuguy83/go-md2man/v2@v2.0.2
       - run: make man
 
@@ -154,11 +136,8 @@ jobs:
             goarm: "7"
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
       - uses: actions/checkout@v4
+      - uses: ./.github/actions/install-go
       - run: |
           set -e -x
 
@@ -211,13 +190,8 @@ jobs:
         os: [ubuntu-22.04, actuated-arm64-4cpu-16gb, macos-12, windows-2019, windows-2022]
         go-version: ["1.20.13", "1.21.6"]
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ matrix.go-version }}
-          cache: false # see actions/setup-go#368
-
       - uses: actions/checkout@v4
-
+      - uses: ./.github/actions/install-go
       - name: Make
         run: |
           make build
@@ -245,15 +219,12 @@ jobs:
         working-directory: src/github.com/containerd/containerd
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
-
       - uses: actions/checkout@v4
         with:
           path: src/github.com/containerd/containerd
 
+      - uses: ./.github/actions/install-go
+
       - uses: actions/checkout@v4
         with:
           repository: kubernetes-sigs/cri-tools
@@ -409,12 +380,8 @@ jobs:
     env:
       GOTEST: gotestsum --
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
-
       - uses: actions/checkout@v4
+      - uses: ./.github/actions/install-go
 
       - name: Install containerd dependencies
         env:
@@ -614,11 +581,8 @@ jobs:
       GOTEST: gotestsum --
 
     steps:
-      - uses: actions/setup-go@v5
-        with:
-          go-version: ${{ env.GO_VERSION }}
-          cache: false # see actions/setup-go#368
       - uses: actions/checkout@v4
+      - uses: ./.github/actions/install-go
       - run: script/setup/install-gotestsum
       - run: script/setup/install-teststat
       - name: Tests