Merge pull request #974 from sozu-proxy/devel/fdubois/fix/pem-parsing · sozu-proxy/sozu@2b23b76

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions-rs/toolchain@v1, actions-rs/cargo@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

unused import: `error`

`sozu-command-lib` (lib) generated 1 warning (run `cargo fix --lib -p sozu-command-lib` to apply 1 suggestion)

method `front_readiness` is never used

method `front_readiness` is never used

`sozu-lib` (lib) generated 2 warnings

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

unused import: `error`

`sozu-command-lib` (lib) generated 1 warning (run `cargo fix --lib -p sozu-command-lib` to apply 1 suggestion)

method `front_readiness` is never used

method `front_readiness` is never used

`sozu-lib` (lib) generated 2 warnings

function `it_should_return_a_correct_header_with_ipv4` is never used

function `it_should_return_a_correct_header_with_ipv6` is never used

`sozu-lib` (lib test) generated 4 warnings (2 duplicates)

`sozu-command-lib` (lib test) generated 1 warning (1 duplicate)

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