chore(deps): update to latest version of chrono

Update to latest version of chrono, fix deprecation warnings.

Signed-off-by: Flavio Castelli <fcastelli@suse.com>

Cargo.toml

@@ -71,7 +71,7 @@ async-trait = "0.1.52"
 base64 = "0.21.0"
 cached = { version = "0.44.0", optional = true }
 cfg-if = "1.0.0"
-chrono = { version = "0.4.23", default-features = false }
+chrono = { version = "0.4.27", default-features = false }
 const-oid = "0.9.1"
 digest = { version = "0.10.3", default-features = false }
 ecdsa = { version = "0.16.7", features = ["pkcs8", "digest", "der", "signing"] }
@@ -123,7 +123,7 @@ zeroize = "1.5.7"
 [dev-dependencies]
 anyhow = { version = "1.0", features = ["backtrace"] }
 assert-json-diff = "2.0.2"
-chrono = "0.4.20"
+chrono = "0.4.27"
 clap = { version = "4.0.8", features = ["derive"] }
 docker_credential = "1.1.0"
 openssl = "0.10.38"

src/cosign/verification_constraint/certificate_verifier.rs

@@ -83,7 +83,7 @@ impl VerificationConstraint for CertificateVerifier {
         }
         match &signature_layer.bundle {
             Some(bundle) => {
-                let it = DateTime::<Utc>::from_utc(
+                let it = DateTime::<Utc>::from_naive_utc_and_offset(
                     NaiveDateTime::from_timestamp_opt(bundle.payload.integrated_time, 0).ok_or(
                         SigstoreError::UnexpectedError("timestamp is not legal".into()),
                     )?,

src/crypto/certificate.rs

@@ -91,7 +91,7 @@ pub(crate) fn verify_validity(certificate: &Certificate) -> Result<()> {
 }
 
 fn verify_expiration(certificate: &Certificate, integrated_time: i64) -> Result<()> {
-    let it = DateTime::<Utc>::from_utc(
+    let it = DateTime::<Utc>::from_naive_utc_and_offset(
         NaiveDateTime::from_timestamp_opt(integrated_time, 0)
             .ok_or(SigstoreError::X509Error("timestamp is not legal".into()))?,
         Utc,