build(deps): bump solana-sysvar from 3.0.0 to 3.1.1

Bumps [solana-sysvar](https://github.com/anza-xyz/solana-sdk) from 3.0.0 to 3.1.1.
- [Release notes](https://github.com/anza-xyz/solana-sdk/releases)
- [Commits](https://github.com/anza-xyz/solana-sdk/compare/sdk@v3.0.0...bn254@v3.1.1)

---
updated-dependencies:
- dependency-name: solana-sysvar
  dependency-version: 3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -20,7 +20,7 @@ solana-program-error = "3.0.0"
 solana-pubkey = "3.0.0"
 solana-rent = "3.0.0"
 solana-stake-interface = { version = "2", features = ["bincode", "borsh", "sysvar"] }
-solana-sysvar = "3.0.0"
+solana-sysvar = "4.0.0"
 solana-sysvar-id = "3.1.0"
 solana-vote-interface = { version = "4.0.4", features = ["bincode"] }