Use Go conventions on context.Context

[micahhausler]

Issue #, if available:

N/A

Description of changes:

Go has strong convention around passing context.Context as the first call to functions. This is called out in the context package documentation

The Context should be the first parameter, typically named ctx:

func DoSomething(ctx context.Context, arg Arg) error {
  // ... use ctx ...
}

Do not pass a nil Context, even if a function permits it. Pass context.TODO if you are unsure about which Context to use.

I intentionally did not fix auth/ and credential_provider/ misuses of context, as that will be fixed in a later PR updating the AWS Go SDK.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 52.62%. Comparing base (e9d3aca) to head (b8204c9).

Files with missing lines	Patch %	Lines
provider/parameter_store_provider.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #433   +/-   ##
=======================================
  Coverage   52.62%   52.62%           
=======================================
  Files          11       11           
  Lines         952      952           
=======================================
  Hits          501      501           
  Misses        436      436           
  Partials       15       15           

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