Bump glium from 0.29.0 to 0.30.2

[dependabot[bot]]

Bumps glium from 0.29.0 to 0.30.2.

Changelog

Sourced from glium's changelog.

Version 0.30.2 (2021-09-06)

• Added depth and stencil buffer blitting.
• Added dual source blending.
• Implemented AsUniformValue for Texture2d directly.

Version 0.30.1 (2021-07-12)

• Added ClientFormat::U1U5U5U5Reversed.
• Updated ouroboros to 0.10.

Version 0.30.0 (2021-06-23)

• Updated glutin to version 0.30.0. See the glutin release notes here.
• Replaced unmaintained rental with ouroboros.
• Allow instancing on GLES3 or later.
• Support for importing and using Vulkan semaphores.
• Made Content::read an unsafe API.
• Modernized and fixed the third chapter of the tutorial.

Version 0.29.1 (2021-04-22)

• Updated rand to 0.8.
• Updated cgmath to 0.18.
• Made UniformsStorage implement Copy and Clone.
• Use $crate::uniform! internally.
• Implemented From instead of Into for some conversions.

Commits

• d0ae191 Merge pull request #1959 from est31/release_0_30
• 685f1fc Release 0.30.2
• e7300e3 Changelog for 0.30.2
• 710dba0 Merge pull request #1956 from strohel/asuniformvalue-for-textures-directly
• 3e3365e Also implement AsUniformValue for Texture2d and friends directly
• 9212005 Add test showcasing lifetime issue of AsUniformValue for Texture2d
• a4e0b55 Merge pull request #1955 from wez/master
• aed9527 Add support for Dual Source Blending
• 2c6caf9 Merge pull request #1952 from tobias93/master
• 7ff5c3a code formatting
• Additional commits viewable in compare view

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