Release v1.0.2 changes

• Crates and runtime version bumped to "1.0.2" (#3436).

Client updates required: NO
External node/runtime api changed: NO
Programs code refactoring level after update libs: PATCH

Programs recommended compiler: nightly-2023-09-18

• Downgrade compiler version from nightly-2023-10-14 to nightly-2023-09-18 (#3451).

It's recommended to use toolchain files for such pins. For more details see: https://rust-lang.github.io/rustup/overrides.html

User-space libraries

• Fixed internal gtest bug that caused test panic in System::spend_blocks (#3481);
• Actualised gtests constants with real runtime (#3510).

Constants become public use gtest::constants and properly documented.
EXISTENTIAL_DEPOSIT bumped from 500 value to 10_000_000_000_000 value (10 tokens).

Runtime

• Fixed internal runtime bug that caused ignore keep_alive field of send_message extrinsic while destination is user (#3458);
• Runtime logic optimisations and stability improvements.

Full Changelog: v1.0.1...v1.0.2