Bump pem from 1.1.1 to 3.0.6

[dependabot]

Bumps pem from 1.1.1 to 3.0.6.

Changelog

Sourced from pem's changelog.

3.0.6

• switch from serde to serde_core

3.0.5

• updated base version in the docs

3.0.4

• updated base64 to 0.22.0

3.0.3

• allow general whitespace separators instead of just newlines

3.0.2

• allow EncodeConfig to be built in a const context

3.0.1

• reduce allocations in pem::encode

3.0.0

• trim proptest features to prevent an MSRV break for testing
• make EncodeConfig struct extendable and add a line_wrap config option

2.0.1

• Fix serde support on no_std
• Drop MSRV to 1.60

2.0

• Add no_std support
• Bump MSRV to 1.67
• Refactor API to prevent direct modification and access of elements and to allow access to the optional rfc1421-described headers.

Commits

• 7d61577 chore: Release pem version 3.0.6
• d5e82b4 update the changelog for the release
• c823343 Merge pull request #59 from tottoto/switch-serde-to-serde-core
• edb50f6 chore: switch serde to serde_core
• c488b6c chore: Release pem version 3.0.5
• 6844ac4 chore: update docs for release
• 2037109 Merge pull request #58 from jeffesquivels/patch-1
• c91e1c9 update inline documentation to use latest version
• 81f9c18 chore: Release pem version 3.0.4
• 2cf763c Merge pull request #55 from tottoto/update-to-base64-0.22.0
• Additional commits viewable in compare view

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