chore: update deps, adapt lint, use json v2 (#1185)

- Raised go to 1.27
- Adopted json v2
- Sync lint config from gitea
- Fixed all issues

Co-authored-by: silverwind <me@silverwind.io>
Reviewed-on: https://gitea.com/gitea/runner/pulls/1185
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: Renovate Bot <renovate-bot@gitea.com>

act/artifacts/server.go

@@ -6,7 +6,7 @@ package artifacts
 
 import (
 	"context"
-	"encoding/json"
+	"encoding/json/v2"
 	"errors"
 	"fmt"
 	"io"
@@ -100,7 +100,7 @@ func uploads(router *httprouter.Router, baseDir string) {
 		}
 		defer file.Close()
 		if req.Body == nil {
-			panic(errors.New("No body given"))
+			panic(errors.New("no body given"))
 		}
 
 		_, err = io.Copy(file, req.Body)