Update to Go 1.20 + run better align (#2927)

* chore(go): update go version to 1.20. Closes #2185

* chore(go): run better align against project

To optimize struct field order. Closes #2870

* chore(go): update CI jobs to use Go 1.20

* fix(go): linter warnings for Go 1.20 update

core/transcoder/transcoder.go

@@ -22,37 +22,40 @@ var _commandExec *exec.Cmd
 
 // Transcoder is a single instance of a video transcoder.
 type Transcoder struct {
-	input                string
-	stdin                *io.PipeReader
-	segmentOutputPath    string
+	codec Codec
+
+	stdin *io.PipeReader
+
+	TranscoderCompleted  func(error)
 	playlistOutputPath   string
-	variants             []HLSVariant
-	appendToStream       bool
 	ffmpegPath           string
 	segmentIdentifier    string
 	internalListenerPort string
-	codec                Codec
+	input                string
+	segmentOutputPath    string
+	variants             []HLSVariant
 
 	currentStreamOutputSettings []models.StreamOutputVariant
 	currentLatencyLevel         models.LatencyLevel
+	appendToStream              bool
 	isEvent                     bool
-
-	TranscoderCompleted func(error)
 }
 
 // HLSVariant is a combination of settings that results in a single HLS stream.
 type HLSVariant struct {
-	index int
+	audioBitrate string // The audio bitrate
 
-	videoSize          VideoSize // Resizes the video via scaling
-	framerate          int       // The output framerate
-	videoBitrate       int       // The output bitrate
-	isVideoPassthrough bool      // Override all settings and just copy the video stream
+	videoSize VideoSize // Resizes the video via scaling
+	index     int
 
-	audioBitrate       string // The audio bitrate
-	isAudioPassthrough bool   // Override all settings and just copy the audio stream
+	framerate    int // The output framerate
+	videoBitrate int // The output bitrate
+
+	cpuUsageLevel      int  // The amount of hardware to use for encoding a stream
+	isVideoPassthrough bool // Override all settings and just copy the video stream
+
+	isAudioPassthrough bool // Override all settings and just copy the audio stream
 
-	cpuUsageLevel int // The amount of hardware to use for encoding a stream
 }
 
 // VideoSize is the scaled size of the video output.