chore: Update to Go v1.21

- go mod tidy (all modules)
- go work sync
- Fixed plugin generation for Go 1.21
- Updated linting for Go 1.21
- Fixed minecraft example for Helm v3 pull download path
- Update dev docs to mention Go 1.21
- Regenerate plugins with Go 1.21

site/Dockerfile

@@ -3,7 +3,7 @@
 # This Dockerfile is based on:
 # (https://github.com/kubernetes/website/blob/main/Dockerfile)
 
-FROM docker.io/library/golang:1.20-alpine
+FROM docker.io/library/golang:1.21-alpine
 
 RUN apk add --no-cache \
     curl \
@@ -21,7 +21,7 @@ RUN mkdir $HOME/src && \
     cd "hugo-${HUGO_VERSION}" && \
     go install --tags extended
 
-FROM docker.io/library/golang:1.20-alpine
+FROM docker.io/library/golang:1.21-alpine
 
 RUN apk add --no-cache \
     runuser \

site/content/en/contribute/mac/_index.md

@@ -9,7 +9,7 @@ description: >
 
 First install the tools to build and run tests
 
-### Install go 1.20
+### Install go 1.21
 
 [Instructions](https://golang.org/doc/install)