gmtp: update to 1.3.11.
gmtp: update to 1.3.11.

Closes #8866.

EaterOfCode/void-packages,EaterOfCode/void-packages,necrophcodr/void-packages,floGik/void-packages,floGik/void-packages,liwakura/void-packages,coredumb/void-packages,liwakura/void-packages,floGik/void-packages,coredumb/void-packages,NeoChontrix/void-packages,liwakura/void-packages,floGik/void-packages,juliendehos/void-packages,kulinacs/void-packages,NeoChontrix/void-packages,necrophcodr/void-packages,kulinacs/void-packages,juliendehos/void-packages,juliendehos/void-packages,coredumb/void-packages,juliendehos/void-packages,coredumb/void-packages,kulinacs/void-packages,necrophcodr/void-packages,NeoChontrix/void-packages,NeoChontrix/void-packages,juliendehos/void-packages,floGik/void-packages,NeoChontrix/void-packages,coredumb/void-packages,liwakura/void-packages,NeoChontrix/void-packages,coredumb/void-packages,floGik/void-packages,kulinacs/void-packages,juliendehos/void-packages,kulinacs/void-packages,EaterOfCode/void-packages,necrophcodr/void-packages,kulinacs/void-packages,EaterOfCode/void-packages,necrophcodr/void-packages,liwakura/void-packages,EaterOfCode/void-packages,liwakura/void-packages