version bumping as a consequence of Rust Docs on milestone 1.2.0

[plebhash]

after doing Rust Docs, it was agreed that we need to bump PATCH version for every crate that is documented

however during v1.2.0, as a consequence of no_std PR #1230, we already bumped all crates that were documented on v1.2.0 milestone

on #1300 + #1302 we bumped:

• buffer_sv2: MAJOR 1.1.0 > 2.0.0
• serde_sv2: MAJOR 1.0.1 > 2.0.0
• const_sv2: MAJOR 2.1.0 > 3.0.0
• framing_sv2: MAJOR 2.0.0 > 3.0.0
• binary_sv2: PATCH 1.2.0 > 1.2.1
• codec_sv2: PATCH 1.3.0 > 1.3.1
• noise_sv2: PATCH 1.2.0 > 1.2.1
• roles_logic_sv2: PATCH 1.2.1 > 1.2.2
• common_messages_sv2: PATCH 2.0.0 > 2.0.1
• job_declaration_sv2: PATCH 1.0.0 > 1.0.1
• mining_sv2: PATCH 1.0.0 > 1.0.1
• template_distribution_sv2: PATCH 1.0.2 > 1.0.3
• sv2_ffi: PATCH 1.0.0 > 1.0.1
• binary_codec_sv2: PATCH 1.2.0 > 1.2.1

therefore the only crates that are still missing bumping are:

• derive_codec_sv2: 1.1.0 > 1.1.1