update all downstream dependencies

no specific features I'm looking to add, just keeping thing up to date.
Unit tests and my manual testing seems like everything is still working
as expected.

vendor/github.com/disintegration/imaging/tools.go

@@ -8,6 +8,7 @@ import (
 // Anchor is the anchor point for image alignment.
 type Anchor int
 
+// Anchor point positions.
 const (
 	Center Anchor = iota
 	TopLeft
@@ -180,3 +181,22 @@ func Overlay(background, img image.Image, pos image.Point, opacity float64) *ima
 
 	return dst
 }
+
+// OverlayCenter overlays the img image to the center of the background image and
+// returns the combined image. Opacity parameter is the opacity of the img
+// image layer, used to compose the images, it must be from 0.0 to 1.0.
+func OverlayCenter(background, img image.Image, opacity float64) *image.NRGBA {
+	bgBounds := background.Bounds()
+	bgW := bgBounds.Dx()
+	bgH := bgBounds.Dy()
+	bgMinX := bgBounds.Min.X
+	bgMinY := bgBounds.Min.Y
+
+	centerX := bgMinX + bgW/2
+	centerY := bgMinY + bgH/2
+
+	x0 := centerX - img.Bounds().Dx()/2
+	y0 := centerY - img.Bounds().Dy()/2
+
+	return Overlay(background, img, image.Point{x0, y0}, opacity)
+}