441: Bump ethbloom from 0.7.0 to 0.8.0 r=devashishdxt a=dependabot-preview[bot]

Bumps [ethbloom](https://github.com/paritytech/parity-common) from 0.7.0 to 0.8.0.
<details>
<summary>Commits</summary>

- [`1e9f990`](paritytech/parity-common@1e9f990) update rand to 0.7 (breaking change) ([#217](https://github-redirect.dependabot.com/paritytech/parity-common/issues/217))
- [`f884d77`](paritytech/parity-common@f884d77) Fix deprecation warning ([#168](https://github-redirect.dependabot.com/paritytech/parity-common/issues/168))
- [`b0ec18d`](paritytech/parity-common@b0ec18d) Fix typos ([#229](https://github-redirect.dependabot.com/paritytech/parity-common/issues/229))
- [`28781a0`](paritytech/parity-common@28781a0) Bump parking_lot version ([#227](https://github-redirect.dependabot.com/paritytech/parity-common/issues/227))
- [`bf0ba84`](paritytech/parity-common@bf0ba84) [kvdb-web] bump futures-preview to 0.3.0-alpha.18 ([#225](https://github-redirect.dependabot.com/paritytech/parity-common/issues/225))
- [`31b6479`](paritytech/parity-common@31b6479) [kvdb-web] indexeddb implementation ([#202](https://github-redirect.dependabot.com/paritytech/parity-common/issues/202))
- [`085d18b`](paritytech/parity-common@085d18b) [kvdb-memorydb] Migrated code to 2018 edition, updated parking_lot ([#222](https://github-redirect.dependabot.com/paritytech/parity-common/issues/222))
- [`baf1df9`](paritytech/parity-common@baf1df9) Migrated code to 2018 edition, updated dependencies ([#221](https://github-redirect.dependabot.com/paritytech/parity-common/issues/221))
- [`6a580c1`](paritytech/parity-common@6a580c1) Bump version ([#219](https://github-redirect.dependabot.com/paritytech/parity-common/issues/219))
- [`67a9e7d`](paritytech/parity-common@67a9e7d) Find PendingIterator in Transaction Pool ([#218](https://github-redirect.dependabot.com/paritytech/parity-common/issues/218))
- Additional commits viewable in [compare view](paritytech/parity-common@ethbloom-v0.7.0...ethbloom-v0.8.0)
</details>
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[![Dependabot compatibility score](https://api.dependabot.com/badges/compatibility_score?dependency-name=ethbloom&package-manager=cargo&previous-version=0.7.0&new-version=0.8.0)](https://dependabot.com/compatibility-score.html?dependency-name=ethbloom&package-manager=cargo&previous-version=0.7.0&new-version=0.8.0)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>