Bump openssl from 0.10.59 to 0.10.60

[dependabot[bot]]

Bumps openssl from 0.10.59 to 0.10.60.

Release notes

Sourced from openssl's releases.

openssl-v0.10.60

What's Changed

• Correct off-by-one in minimum output buffer size computation by @​alex in sfackler/rust-openssl#2088
• Expose a few more (bad) ciphers in cipher::Cipher by @​alex in sfackler/rust-openssl#2084
• add temp key bindings by @​jmayclin in sfackler/rust-openssl#2076
• Expose ChaCha20 on LibreSSL by @​alex in sfackler/rust-openssl#2093
• Revert "Correct off-by-one in minimum output buffer size computation" by @​alex in sfackler/rust-openssl#2090
• Added update_unchecked to symm::Crypter by @​alex in sfackler/rust-openssl#2100
• fixes #2096 -- deprecate X509StoreRef::objects, it is unsound by @​alex in sfackler/rust-openssl#2099
• Don't leak when overwriting ex data by @​sfackler in sfackler/rust-openssl#2102
• Release openssl v0.10.60 and openssl-sys v0.9.96 by @​alex in sfackler/rust-openssl#2104

Full Changelog: https://github.com/sfackler/rust-openssl/compare/openssl-v0.10.59...openssl-v0.10.60

Commits

• 8f4b97a Merge pull request #2104 from alex/bump-for-release
• df66283 Release openssl v0.10.60 and openssl-sys v0.9.96
• 1a09dc8 Merge pull request #2102 from sfackler/ex-leak
• b0a1da5 Merge branch 'master' into ex-leak
• f456b60 Merge pull request #2099 from alex/deprecate-store-ref-objects
• a8413b8 Merge pull request #2100 from alex/symm-update-unchecked
• a92c237 clippy
• e839496 Don't leak when overwriting ex data
• 602d38d Added update_unchecked to symm::Crypter
• cf9681a fixes #2096 -- deprecate X509StoreRef::objects, it is unsound
• Additional commits viewable in compare view

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[swcurran]

@andrewwhitehead — thoughts on merging this one?