fix(ci): pin coverallsapp to v0.6.15#2044

oleonardolima wants to merge 1 commit intobitcoindevkit:masterbitcoindevkit/bdk:masterfrom

oleonardolima:ci/pin-code-coverage-to-0.6.15oleonardolima/bdk:ci/pin-code-coverage-to-0.6.15Copy head branch name to clipboard