Cleanup EVP_PKEY serialization #1311

Job	Run time
apidiff (aws-lc-sys, branch)	2m 47s
bindgen-dependency (ubuntu-latest)	24s
apidiff (aws-lc-sys, published)	2m 58s
bindgen-fips-dependency (ubuntu-latest)	18s
bindgen-dependency (macos-13)	39s
apidiff (aws-lc-fips-sys, branch)	3m 12s
bindgen-fips-dependency (macos-13)	38s
bindgen-dependency (macos-14-xlarge)	26s
apidiff (aws-lc-fips-sys, published)	3m 50s
bindgen-fips-dependency (macos-14-xlarge)	24s
bindgen-dependency (windows-latest)	55s
apidiff (aws-lc-rs, branch)	2m 48s
bindgen-fips-dependency (windows-latest)	1m 6s
apidiff (aws-lc-rs, published)	3m 4s
clippy (aws-lc-rs, --features bindgen,unstable)	1m 16s
clippy (aws-lc-rs, --features bindgen,unstable,fips)	1m 41s
dependency-review	21s
metadata-checks	29s
clippy (aws-lc-rs, --no-default-features --features aws-lc-sys)	48s
Resolve the dependencies to the minimum SemVer version (aws-lc-rs)	41s
rustfmt	29s
Resolve the dependencies to the minimum SemVer version (aws-lc-sys)	42s
semver-checks	1m 28s
Resolve the dependencies to the minimum SemVer version (aws-lc-fips-sys)	1m 2s
udeps	7m 55s
	40m 21s

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