SUBMARINE-922. Migrate to the next version of Python requests when re…

…leased

### What is this PR for?
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First time? Check out the contributing guide - https://submarine.apache.org/contribution/contributions.html
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Install latest `request` in the pysubmarine.

See Github issue: #661

Our python code uses requests library which has transitive dependency on a GPL lib chardet.

We're not supposed to make an ASF release knowing there's a GPL transitive dependency so this is a blocker for our 0.6.0 release.

Quickly checked the code, we have two places that use the library. We could wait for the new requests or perhaps remove the usage.

```
find . -name "*.py" | xargs grep "import requests"
./submarine-sdk/pysubmarine/submarine/utils/rest_utils.py:import requests
./submarine-sdk/pysubmarine/build/lib/submarine/utils/rest_utils.py:import requests
```

### What type of PR is it?
[Hot Fix]

### Todos
No

### What is the Jira issue?
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* Put link here, and add [SUBMARINE-*Jira number*] in PR title, eg. `SUBMARINE-23. PR title`
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https://issues.apache.org/jira/browse/SUBMARINE-922

### How should this be tested?
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* Strongly recommended: add automated unit tests for any new or changed behavior
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Pass the CIs
### Screenshots (if appropriate)

### Questions:
* Do the license files need updating? No
* Are there breaking changes for older versions? No
* Does this need new documentation? No

Author: Kevin Su <pingsutw@apache.org>

Signed-off-by: Kevin <pingsutw@apache.org>

Closes #722 from pingsutw/SUBMARINE-922 and squashes the following commits:

af04a0f [Kevin Su] Update setup.py

submarine-sdk/pysubmarine/setup.py

@@ -33,18 +33,18 @@
         'sqlalchemy',
         'sqlparse',
         'pymysql',
-        'requests',
-        'urllib3 >= 1.15.1',
-        'certifi >= 14.05.14',
-        'python-dateutil >= 2.5.3',
+        'requests==2.26.0',
+        'urllib3>=1.15.1',
+        'certifi>=14.05.14',
+        'python-dateutil>=2.5.3',
         'pyarrow==0.17.0',
         'mlflow>=1.15.0',
         'boto3>=1.17.58',
     ],
     extras_require={
-        'tf':['tensorflow>=1.14.0,<2.0.0'],
-        'tf-latest':['tensorflow'],
-        'pytorch':['torch>=1.5.0','torchvision>=0.6.0'],
+        'tf': ['tensorflow>=1.14.0,<2.0.0'],
+        'tf-latest': ['tensorflow'],
+        'pytorch': ['torch>=1.5.0', 'torchvision>=0.6.0'],
     },
     classifiers=[
         'Intended Audience :: Developers',