Add Python OneAgent code-module to Dynatrace hook

[arthfl]

• A short explanation of the proposed change:
  Adds python code-module to Dynatrace hook
  Bumps libbuildpack-dynatrace to v1.10.0

• An explanation of the use cases your change solves
  Enables users of the Dynatrace integration in the python-buildpack to also utilize the Python code-module of the Dynatrace OneAgent.

• I have viewed signed and have submitted the Contributor License Agreement

• I have made this pull request to the master branch

• I have added an integration test

[ivanovac]

@arthfl
go.sum is inconsistent: Please, run go mod tidy and go mod vendor and commit the cleaned go.sum

Testing: No test file is added or modified. Also, the existing src/python/integration/dynatrace_test.go cannot verify this change: the mock server (fixtures/util/dynatrace/main.go) ignores the include= query parameters entirely and serves the installer regardless of requested technologies. So the new python module is effectively untested — nothing asserts that include=python is actually sent.
Suggestion: add a unit test on getDownloadURL asserting the python include is present, or extend the mock to record/assert the include params. (A pure buildpack-side integration test is hard here precisely because of the mock's design.)

[ivanovac]

Please, check the comments above

[arthfl]

@ivanovac go.sum is hereby updated. I'll check the issue with the missing test.

[arthfl]

@ivanovac i can't add a unit test here for getDownloadURL because that is a private method of libbuildpack-dynatrace and not accessible in the python-buildpack.
All the logic of configuring installer downloads is already tested over there.

[ivanovac]

The go.sum is updated. Please edit the PR description as no integration test is added

[ivanovac]

lgtm

[arthfl]

unchecked the integration test box :-)

[arthfl]

Who will merge this then?