refactor: Remove `openssl` feature flag #4773

Job	Run time
Clippy	2m 52s
License / vulnerability audit (advisories)	25s
Default features build	2m 22s
Enforce Rust code format	14s
License / vulnerability audit (bans licenses sources)	30s
Preflight docs.rs build	2m 17s
Doc tests (requires nightly Rust) (windows-latest)	11m 10s
Unit tests (windows-latest, stable)	14m 36s
Doc tests (requires nightly Rust) (macos-latest)	3m 52s
Unit tests with minimum versions of direct dependencies (windows-latest)	12m 11s
Unit tests (windows-latest, 1.82.0)	13m 17s
Unit tests (c2patool) (windows-latest, stable)	10m 53s
Doc tests (requires nightly Rust) (ubuntu-latest)	3m 46s
Unit tests with minimum versions of direct dependencies (macos-latest)	3m 57s
Unit tests (macos-latest, stable)	4m 51s
Unit tests with minimum versions of direct dependencies (ubuntu-latest)	4m 16s
Unit tests (c2patool) (macos-latest, stable)	3m 17s
Unit tests (macos-latest, 1.82.0)	6m 42s
Unit tests (c2patool) (ubuntu-latest, stable)	3m 41s
Unit tests (ubuntu-latest, stable)	4m 57s
Unit tests (aarch64-unknown-linux-gnu, stable)	13m 28s
Unit tests (ubuntu-latest, 1.82.0)	5m 32s
Unit tests (WASI)	4m 12s
Unit tests (aarch64-unknown-linux-gnu, 1.82.0)	12m 4s
Unit tests (WASM)	3m 18s
Check for unused dependencies	2m 28s
	2h 31m 8s

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