bump: update golang to 1.21

.github/workflows/build.yml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ['1.20']
+        go-version: ['1.21']
       fail-fast: true
     steps:
       - name: Checkout

.github/workflows/codeql-analysis.yml

@@ -35,7 +35,7 @@ jobs:
       security-events: write
     strategy:
       matrix:
-        go-version: ['1.20']
+        go-version: ['1.21']
       fail-fast: false
     steps:
       - name: Checkout repository

.github/workflows/golangci-lint.yml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: ['1.20']
+        go-version: ['1.21']
       fail-fast: true
     steps:
     - name: Checkout

.github/workflows/release-github.yml

@@ -29,7 +29,7 @@ jobs:
       - name: setup go environment
         uses: actions/setup-go@v3
         with:
-          go-version: '1.20.5'
+          go-version: '1.21.0'
       - name: run goreleaser
         uses: goreleaser/goreleaser-action@v2
         with:

Dockerfile

@@ -11,7 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.20.5-alpine as builder
+FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.21.0-alpine as builder
 ARG TARGETPLATFORM
 RUN apk add git make
 ENV ORASPKG /oras

go.mod

@@ -1,6 +1,6 @@
 module oras.land/oras
 
-go 1.20
+go 1.21
 
 require (
 	github.com/opencontainers/go-digest v1.0.0

snapcraft.yaml

@@ -42,7 +42,7 @@ parts:
       - on amd64 to s390x:
         - TARGET_ARCH: "s390x"
     build-snaps:
-      - go/1.20/stable
+      - go/1.21/stable
     build-packages:
       - make
     stage-packages:

test/e2e/go.mod

@@ -1,6 +1,6 @@
 module oras.land/oras/test/e2e
 
-go 1.20
+go 1.21
 
 require (
 	github.com/onsi/ginkgo/v2 v2.11.0

test/e2e/go.work

@@ -1,4 +1,4 @@
-go 1.20
+go 1.21
 
 use (
 	.