Update base64 requirement from 0.20.0 to 0.21.2

[dependabot[bot]]

Updates the requirements on base64 to permit the latest version.

Changelog

Sourced from base64's changelog.

0.21.2

• Rollback MSRV to 1.57.0 -- only dev dependencies need 1.60, not the main code

0.21.1

• Remove the possibility of panicking during decoded length calculations
• DecoderReader no longer sometimes erroneously ignores padding #226

Breaking changes

• Engine.internal_decode return type changed
• Update MSRV to 1.60.0

0.21.0

Migration

Functions

< 0.20 function	0.21 equivalent
encode()	engine::general_purpose::STANDARD.encode() or prelude::BASE64_STANDARD.encode()
encode_config()	engine.encode()
encode_config_buf()	engine.encode_string()
encode_config_slice()	engine.encode_slice()
decode()	engine::general_purpose::STANDARD.decode() or prelude::BASE64_STANDARD.decode()
decode_config()	engine.decode()
decode_config_buf()	engine.decode_vec()
decode_config_slice()	engine.decode_slice()

The short-lived 0.20 functions were the 0.13 functions with config replaced with engine.

Padding

If applicable, use the preset engines engine::STANDARD, engine::STANDARD_NO_PAD, engine::URL_SAFE, or engine::URL_SAFE_NO_PAD. The NO_PAD ones require that padding is absent when decoding, and the others require that canonical padding is present .

If you need the < 0.20 behavior that did not care about padding, or want to recreate < 0.20.0's predefined Configs precisely, see the following table.

0.13.1 Config	0.20.0+ alphabet	encode_padding	decode_padding_mode
STANDARD	STANDARD	true	Indifferent
STANDARD_NO_PAD	STANDARD	false	Indifferent
URL_SAFE	URL_SAFE	true	Indifferent
URL_SAFE_NO_PAD	URL_SAFE	false	Indifferent

... (truncated)

Commits

• 1e8246a v0.21.2
• 13690af Merge pull request #239 from marshallpierce/mp/msrv
• 02af00a Roll back MSRV to 1.57.0
• 09c7907 Remove readme comments about benches needing nightly
• f589cde Merge pull request #238 from marshallpierce/mp/decoder-reader-padding
• 57e2334 Fix DecoderReader handling of padding
• f766bc6 Merge pull request #223 from marshallpierce/mp/add_padding_len
• 9687b03 Switch add_padding() to use encoded len
• 29ed4d0 Merge pull request #217 from marshallpierce/mp/decode-estimate
• 453d15d Update release notes
• Additional commits viewable in compare view

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