build: Use go 1.21 & update GitHub actions.

.github/workflows/go.yml

@@ -6,17 +6,17 @@ jobs:
  runs-on: ubuntu-latest
  strategy:
  matrix:
- go: ["1.19", "1.20"]
+ go: ["1.20", "1.21"]
  steps:
  - name: Set up Go
- uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 #v3.5.0
+ uses: actions/setup-go@93397bea11091df50f3d7e59dc26a7711a8bcfbe #v4.1.0
  with:
  go-version: ${{ matrix.go }}
  - name: Check out source
- uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c #v3.3.0
+ uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 #v3.5.3
  - name: Build
  run: go build ./...
  - name: Install Linters
- run: "curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.53.2"
+ run: "curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.53.3"
  - name: Test and Lint
  run: ./run_tests.sh

README.md

@@ -44,7 +44,7 @@ VSP will add the ticket to a pool of always-online voting wallets.
 
 ## Implementation
 
-vspd is built and tested on go 1.19 and 1.20, making use of the following
+vspd is built and tested on go 1.20 and 1.21, making use of the following
 libraries:
 
 - [gin-gonic/gin](https://github.com/gin-gonic/gin) webserver.