Upgrade object_store dependency to use chrono 0.4.34

[l1nxy]

Which issue does this PR close?

The object store crate using the old chrono version,but the code is rewrite by #5479 . now the test in object store will be failed. so we need to upgrade the chrono version.

Rationale for this change

What changes are included in this PR?

Using the latest chrono.

Are there any user-facing changes?

[alamb]

Thank you @l1nxy

I tested this locally like this

cd object_store
cargo update -p chrono --precise 0.4.31
cargo test

And the compilation indeed failed

error[E0599]: no function or associated item named `try_hours` found for struct `chrono::Duration` in the current scope
    --> src/lib.rs:1680:76
     |
1680 |             if_modified_since: Some(meta.last_modified - chrono::Duration::try_hours(10).unwrap()),
     |                                                                            ^^^^^^^^^
     |                                                                            |
     |                                                                            function or associated item not found in `Duration`
     |                                                                            help: there is an associated function with a similar name: `hours`

I then verified the test pass with version 0.4.34:

cargo update -p chrono --precise 0.4.34

[alamb]

Thanks again @l1nxy