build: bump golang from 1.20.12 to 1.21.5

dependabot[bot] · buchdag · commit 2bd8114a107a · 2023-12-19T13:04:26.000+01:00
Bumps golang from 1.20.12 to 1.21.5.

---
updated-dependencies:
- dependency-name: golang
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] &lt;support@github.com&gt;
diff --git a/.github/workflows/assets.yml b/.github/workflows/assets.yml
@@ -17,7 +17,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "1.21"
 
       - name: Build release assets
         run: make release
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -23,7 +23,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.20"
+          go-version: "1.21"
 
       - name: Install dependencies
         run: make get-deps
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
@@ -1,7 +1,7 @@
 ARG DOCKER_GEN_VERSION=main
 
 # Build docker-gen from scratch
-FROM golang:1.20.12-alpine as go-builder
+FROM golang:1.21.5-alpine as go-builder
 
 ARG DOCKER_GEN_VERSION
 WORKDIR /build
diff --git a/Dockerfile.debian b/Dockerfile.debian
@@ -1,7 +1,7 @@
 ARG DOCKER_GEN_VERSION=main
 
 # Build docker-gen from scratch
-FROM golang:1.20.12 as go-builder
+FROM golang:1.21.5 as go-builder
 
 ARG DOCKER_GEN_VERSION
 
diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/nginx-proxy/docker-gen
 
-go 1.20
+go 1.21
 
 require (
 	github.com/BurntSushi/toml v1.3.2

-Original file line number
+Diff line change
 module github.com/nginx-proxy/docker-gen
 -go 1.20
 +go 1.21
 require (
 	github.com/BurntSushi/toml v1.3.2