chore: Go to 1.15 (1.11 is EOL)

Author: zqureshi

.github/workflows/goreleaser.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.14
+          go-version: 1.15
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:

build/Dockerfile.tracerunner

@@ -1,7 +1,7 @@
 ARG bpftraceversion=v0.11.1
 FROM quay.io/iovisor/bpftrace:$bpftraceversion as bpftrace
 
-FROM golang:1.11.4-stretch as gobuilder
+FROM golang:1.15-buster as gobuilder
 
 RUN apt-get update
 RUN apt-get install -y make bash git