Bump rppal from 0.14.1 to 0.15.0

Bumps rppal from 0.14.1 to 0.15.0.

Release notes

Sourced from rppal's releases.

v0.15.0

• Add support for Raspberry Pi 5 (thanks @​ukscone for all the testing!).
• Gpio: (Breaking change) Rename PullUpDown enum to Bias, and set_pullupdown to set_bias.
• Gpio: Add support for new modes Alt6, Alt7 and Alt8.
• I2c: Implement I2C transactions for embedded-hal (contributed by @​CBJamo).

Changelog

Sourced from rppal's changelog.

0.15.0 (October 18, 2023)

• Add support for Raspberry Pi 5 (thanks @​ukscone for all the testing!).
• Gpio: (Breaking change) Rename PullUpDown enum to Bias, and set_pullupdown to set_bias.
• Gpio: Add support for new modes Alt6, Alt7 and Alt8.
• I2c: Implement I2C transactions for embedded-hal (contributed by @​CBJamo).

Commits

• 1a443c4 Update documentation
• a2983f4 Bump version to 0.15.0
• eb359e1 Update documentation
• e0578f3 Change cdev from rp1-gpiomem to gpiomem0
• d0d352b Set direction before changing mode
• 0ce2eba Update formatting
• 1ba55d6 Implement input_enable and output_enable
• dc7596c Implement set_bias
• 65eb608 Reorganize constants
• e07d92c Add RIO interface
• Additional commits viewable in compare view

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