feat: update to 3.9 syntax

[ajberdy]

Issue #, if available:

Description of changes:

update typing and misc to utilize 3.9

Testing done:

unit tests and a bit of manual verification

Merge Checklist

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General

• I have read the CONTRIBUTING doc
• I used the commit message format described in CONTRIBUTING
• I have updated any necessary documentation, including READMEs and API docs (if appropriate)

Tests

• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have checked that my tests are not configured for a specific region or account (if appropriate)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (29358fe) 100.00% compared to head (45d61b2) 100.00%.

Additional details and impacted files

@@                   Coverage Diff                   @@
##           feature/job-decorator      #735   +/-   ##
=======================================================
  Coverage                 100.00%   100.00%           
=======================================================
  Files                        129       129           
  Lines                       8335      8338    +3     
  Branches                    1857      1857           
=======================================================
+ Hits                        8335      8338    +3     

Files	Coverage Δ
src/braket/aws/aws_quantum_job.py	100.00% <100.00%> (ø)
src/braket/jobs/config.py	100.00% <100.00%> (ø)
src/braket/jobs/data_persistence.py	100.00% <100.00%> (ø)
src/braket/jobs/environment_variables.py	100.00% <100.00%> (ø)
src/braket/jobs/hybrid_job.py	100.00% <100.00%> (ø)
src/braket/jobs/local/local_job.py	100.00% <100.00%> (ø)
src/braket/jobs/quantum_job_creation.py	100.00% <100.00%> (ø)

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