[MINOR][INFRA] Upgrade Jira client to 2.0.0

### What changes were proposed in this pull request?

SPARK-10498 added the initial Jira client requirement with 1.0.3 five year ago (2016 January). As of today, it causes `dev/merge_spark_pr.py` failure with `Python 3.9.4` due to this old dependency. This PR aims to upgrade it to the latest version, 2.0.0. The latest version is also a little old (2018 July).
- https://pypi.org/project/jira/#history

### Why are the changes needed?

`Jira==2.0.0` works well with both Python 3.8/3.9 while `Jira==1.0.3` fails with Python 3.9.

**BEFORE**
```
$ pyenv global 3.9.4
$ pip freeze | grep jira
jira==1.0.3
$ dev/merge_spark_pr.py
Traceback (most recent call last):
  File "/Users/dongjoon/APACHE/spark-merge/dev/merge_spark_pr.py", line 39, in <module>
    import jira.client
  File "/Users/dongjoon/.pyenv/versions/3.9.4/lib/python3.9/site-packages/jira/__init__.py", line 5, in <module>
    from .config import get_jira
  File "/Users/dongjoon/.pyenv/versions/3.9.4/lib/python3.9/site-packages/jira/config.py", line 17, in <module>
    from .client import JIRA
  File "/Users/dongjoon/.pyenv/versions/3.9.4/lib/python3.9/site-packages/jira/client.py", line 165
    validate=False, get_server_info=True, async=False, logging=True, max_retries=3):
                                          ^
SyntaxError: invalid syntax
```

**AFTER**
```
$ pip install jira==2.0.0
$ dev/merge_spark_pr.py
git rev-parse --abbrev-ref HEAD
Which pull request would you like to merge? (e.g. 34):
```

### Does this PR introduce _any_ user-facing change?

No. This is a committer-only script.

### How was this patch tested?

Manually.

Closes apache#32215 from dongjoon-hyun/jira.

Authored-by: Dongjoon Hyun <[email protected]>
Signed-off-by: HyukjinKwon <[email protected]>

dev/requirements.txt

@@ -1,5 +1,5 @@
 flake8==3.5.0
-jira==1.0.3
+jira==2.0.0
 PyGithub==1.26.0
 sphinx
 pydata_sphinx_theme