### What changes were proposed in this pull request?
Although AS-IS master branch already works with K8s 1.20, this PR aims to upgrade K8s client to 5.3.0 to support K8s 1.20 officially.
- https://github.com/fabric8io/kubernetes-client#compatibility-matrix
The following are the notable breaking API changes.
1. Remove Doneable (5.0+):
- https://github.com/fabric8io/kubernetes-client/pull/2571
2. Change Watcher.onClose signature (5.0+):
- https://github.com/fabric8io/kubernetes-client/pull/2616
3. Change Readiness (5.1+)
- https://github.com/fabric8io/kubernetes-client/pull/2796
### Why are the changes needed?
According to the compatibility matrix, this makes Apache Spark and its external cluster manager extension support all K8s 1.20 features officially for Apache Spark 3.2.0.
### Does this PR introduce _any_ user-facing change?
Yes, this is a dev dependency change which affects K8s cluster extension users.
### How was this patch tested?
Pass the CIs.
This is manually tested with K8s IT.
```
KubernetesSuite:
- Run SparkPi with no resources
- Run SparkPi with a very long application name.
- Use SparkLauncher.NO_RESOURCE
- Run SparkPi with a master URL without a scheme.
- Run SparkPi with an argument.
- Run SparkPi with custom labels, annotations, and environment variables.
- All pods have the same service account by default
- Run extraJVMOptions check on driver
- Run SparkRemoteFileTest using a remote data file
- Verify logging configuration is picked from the provided SPARK_CONF_DIR/log4j.properties
- Run SparkPi with env and mount secrets.
- Run PySpark on simple pi.py example
- Run PySpark to test a pyfiles example
- Run PySpark with memory customization
- Run in client mode.
- Start pod creation from template
- PVs with local storage
- Launcher client dependencies
- SPARK-33615: Launcher client archives
- SPARK-33748: Launcher python client respecting PYSPARK_PYTHON
- SPARK-33748: Launcher python client respecting spark.pyspark.python and spark.pyspark.driver.python
- Launcher python client dependencies using a zip file
- Test basic decommissioning
- Test basic decommissioning with shuffle cleanup
- Test decommissioning with dynamic allocation & shuffle cleanups
- Test decommissioning timeouts
- Run SparkR on simple dataframe.R example
Run completed in 17 minutes, 44 seconds.
Total number of tests run: 27
Suites: completed 2, aborted 0
Tests: succeeded 27, failed 0, canceled 0, ignored 0, pending 0
All tests passed.
```
Closes#32221 from dongjoon-hyun/SPARK-K8S-530.
Authored-by: Dongjoon Hyun <dhyun@apple.com>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
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