Update Starknet version constant to 0.13.1.1; Update docs on updating

Usage related changes

Improve dev docs on updating Starknet (blockifier) and RPC
tini notice is removed from Docker docs because it is already mentioned in the Dockerfile (redundancy)

[x] Checked the relevant parts of development docs
[x] Applied formatting - ./scripts/format.sh
[x] No linter errors - ./scripts/clippy_check.sh
[x] No unused dependencies - ./scripts/check_unused_deps.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 which this PR resolves
[x] Updated the tests if needed; all passing (execution info)