fw: iec: bump rmodbus from 0.6.4 to 0.7.2 in /Firmware-IEC

[dependabot]

Bumps rmodbus from 0.6.4 to 0.7.2.

Changelog

Sourced from rmodbus's changelog.

Changelog

v0.7.0

• ModbusContext has become a struct with custom context sizes with generic constants
• Use ModbusContextSmall for small contexts and ModbusContextFull for big ones
• Removed built-in dump/restore methods (use serde, bincode or custom ones)

v0.6.3

• Moved modbus constants into a consts module.
• Reworked the crate dependency and cargo-feature structure. Features are now additive only. Instead of the nostd feature, a std one can be opted-out by specifying default-features = false. Similarly, instead of the smallcontext feature, there is now a fullcontext feature which is also enabled by default.
• Crate structure cleanup.

v0.6

• guess_request_frame_len function now supports TCP (and perhaps UDP)
• huge code refactoring, fixed and formatted for the nowadays Rust standards
• majority of functions correctly check overflows and report errors instead of invalid values/panics

v0.5

• Common functions and structures moved to main crate module
• Modbus client

v0.4

• Modbus context is no longer created automatically and no mutex guard is provided by default. Use ModbusContext::new() to create context object and then use it as you wish - protect with any kind of Mutex, with RwLock or just put into UnsafeCell.
• Context SDK changes: all functions moved inside context, removed unnecessary ones, function args optimized.
• FixedVec support included by default, both in std and nostd.
• Added support for 64-bit integers

Commits

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[dependabot]

Superseded by #20.