Change Go build version to eliminate the risk of needing both old and new build tags

With Go 1.18 and running `go fix`, we no longer have the risk of running into build issues due to not having both build flags, as Horia raised in the PR.

Author: edif2008

.circleci/config.yml

@@ -30,13 +30,13 @@ jobs:
       arch:
         type: string
     docker:
-      - image: circleci/golang:1.17
+      - image: circleci/golang:1.18
     steps:
       - checkout
       - run: GOOS=<< parameters.os >> GOARCH=<< parameters.arch >> go build ./cmd/secrethub
   test:
     docker:
-      - image: circleci/golang:1.17
+      - image: circleci/golang:1.18
     steps:
       - checkout
       - restore_cache:
@@ -50,7 +50,7 @@ jobs:
       - run: make test
   verify-goreleaser:
     docker:
-      - image: goreleaser/goreleaser:v0.133
+      - image: goreleaser/goreleaser:v1.12.3
     steps:
       - checkout
       - run: goreleaser check

go.mod

@@ -1,6 +1,6 @@
 module github.com/secrethub/secrethub-cli
 
-go 1.17
+go 1.18
 
 require (
 	bitbucket.org/zombiezen/cardcpx v0.0.0-20150417151802-902f68ff43ef