Bump libc from 0.2.62 to 0.2.64

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.62 to 0.2.64.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.62...0.2.64)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

programs/bpf_loader_api/Cargo.toml

@@ -11,7 +11,7 @@ edition = "2018"
 [dependencies]
 bincode = "1.2.0"
 byteorder = "1.3.2"
-libc = "0.2.62"
+libc = "0.2.64"
 log = "0.4.8"
 serde = "1.0.101"
 solana-logger = { path = "../../logger", version = "0.20.0" }

programs/move_loader_api/Cargo.toml

@@ -12,7 +12,7 @@ edition = "2018"
 bincode = "1.2.0"
 byteorder = "1.3.2"
 indexmap = "1.1.0"
-libc = "0.2.62"
+libc = "0.2.64"
 log = "0.4.8"
 serde = "1.0.101"
 serde_derive = "1.0.101"