Chore: Upgrade Go to 1.20.1 and Alpine to 3.17 (#63639)

pkg/build/docker/build.go

@@ -70,7 +70,7 @@ func BuildImage(version string, arch config.Architecture, grafanaDir string, use
 	}
 
 	libc := "-musl"
-	baseImage := fmt.Sprintf("%salpine:3.15", baseArch)
+	baseImage := fmt.Sprintf("%salpine:3.17", baseArch)
 	tagSuffix := ""
 	if useUbuntu {
 		libc = ""

pkg/util/errutil/log.go

@@ -31,7 +31,7 @@ func (l LogLevel) LogFunc(logger LogInterface) func(msg string, ctx ...interface
 		return logger.Info
 	case LevelWarn:
 		return logger.Warn
-	default: // LevelUnknown and LevelError
+	default: // LevelUnknown and LevelError.
 		return logger.Error
 	}
 }