build(deps): update openssl-sys to 0.9.117 for OpenSSL 4 support

[BenjaminDEMAILLE]

Problem

Cargo.lock pins openssl-sys 0.9.112, which refuses to build against OpenSSL 4:

// openssl-sys-0.9.112/build/main.rs:439
if openssl_version >= 0x4_00_00_00_0 {
    version_error()   // panic!("... no supported version of OpenSSL found ...")
}

The dependency chain is rust-htslib → hts-sys → curl-sys → openssl-sys, so any
build of RustQC with --locked on a system whose OpenSSL is 4.x fails at that check.

OpenSSL 4 support landed in openssl-sys 0.9.114; from that release the same code path
reads:

// openssl-sys-0.9.117/build/main.rs:444
if openssl_version >= 0x5_00_00_00_0 {
    version_error()
} else if openssl_version >= 0x4_00_00_00_0 {
    Version::Openssl4xx
}

This matters for distributions that have already moved: Homebrew is migrating its
formulae to openssl@4, and a RustQC formula currently has to pin openssl@3 to build.

Change

cargo update -p openssl-sys, which moves 0.9.112 → 0.9.117. Cargo.toml is
untouched: the bump is within the existing semver range, so this is a lockfile-only
change of two lines.

Verification

cargo build --release --locked     # ok
cargo test  --release --locked     # 232 passed, 0 failed

Independent of #130, which updates hts-sys; the two touch different lockfile entries
and can land in either order.