chore: update to build with Go 1.21

.github/workflows/build.yml

@@ -10,7 +10,7 @@ on:
       - 'master'
 
 env:
-  GO_VERSION: 1.20.x
+  GO_VERSION: 1.21.x
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.event_name == 'push' && github.sha || github.ref }}

.github/workflows/docker-build.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v4
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
       - uses: actions/checkout@v4
       - run: docker build -t $IMAGE_NAME:$WIP_IMAGE_TAG .
       - run: docker run --rm $IMAGE_NAME:$WIP_IMAGE_TAG --version

.github/workflows/gateway-conformance.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
       - name: Checkout kubo-gateway
         uses: actions/checkout@v4
         with:

.github/workflows/gobuild.yml

@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v4
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
       - uses: actions/checkout@v4
       - run: make cmd/ipfs-try-build
         env:

.github/workflows/golang-analysis.yml

@@ -27,7 +27,7 @@ jobs:
           submodules: recursive
       - uses: actions/setup-go@v4
         with:
-          go-version: "1.20.x"
+          go-version: "1.21.x"
       - name: Check that go.mod is tidy
         uses: protocol/multiple-go-modules@v1.4
         with:

.github/workflows/golint.yml

@@ -31,6 +31,6 @@ jobs:
     steps:
       - uses: actions/setup-go@v4
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
       - uses: actions/checkout@v4
       - run: make -O test_go_lint

.github/workflows/gotest.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
       - name: Check out Kubo
         uses: actions/checkout@v4
       - name: Install missing tools

.github/workflows/sharness.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.20.x
+          go-version: 1.21.x
       - name: Checkout Kubo
         uses: actions/checkout@v4
         with:

Dockerfile

@@ -1,4 +1,4 @@
-FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.20 AS builder
+FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.21 AS builder
 
 ARG TARGETOS TARGETARCH