Release v0.0.6

[FabijanC]

Usage related changes

Patch number of all Devnet crates upped by 1:

• starknet-devnet 0.0.6
• starknet-devnet-core 0.0.6
• starknet-devnet-server 0.0.6
• starknet-devnet-types 0.0.5

Added a documentation entry for v0.0.6

Development related changes

Checklist:

• [x] Checked out the contribution guidelines
• [x] Applied formatting - ./scripts/format.sh
• [x] No linter errors - ./scripts/clippy_check.sh
• [x] No unused dependencies - ./scripts/check_unused_deps.sh
• [x] No spelling errors - ./scripts/check_spelling.sh
• [x] Performed code self-review
• [x] Rebased to the latest commit of the target branch (or merged it into my branch)
• [x] Updated the docs if needed, including the TODO section
• [x] Linked the issues resolvable by this PR - linking info
• [x] Updated the tests if needed; all passing - execution info