Add retry mechanism on saving tasks to history collection

go.mod

go.sum

internal/executor/worker.go

internal/storage/storage.go

vendor/github.com/cenkalti/backoff/v4/.gitignore

vendor/github.com/cenkalti/backoff/v4/.travis.yml

vendor/github.com/cenkalti/backoff/v4/LICENSE

vendor/github.com/cenkalti/backoff/v4/README.md

vendor/github.com/cenkalti/backoff/v4/backoff.go

vendor/github.com/cenkalti/backoff/v4/context.go

vendor/github.com/cenkalti/backoff/v4/exponential.go

vendor/github.com/cenkalti/backoff/v4/retry.go

vendor/github.com/cenkalti/backoff/v4/ticker.go

vendor/github.com/cenkalti/backoff/v4/timer.go

vendor/github.com/cenkalti/backoff/v4/tries.go

vendor/modules.txt