Bump google-ads version to use v18 by default

[VladaZakharova]

This PR is related to the upgrade of google-ads dependency. There is a new API version on Google Ads API and Google Ads API tends to deprecate too quickly. So we are trying to increase the dependency version to match with the latest version.

Since we mostly use the types from the underlying library it is safe to upgrade. Also the users can give specific API version to override default value and use the previous API versions.

Here is the "Deprecation and sunset page" of Google Ads API: https://developers.google.com/google-ads/api/docs/sunset-dates.

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[eladkal]

Can we maybe change our approach to the default version?

We have default value in our hook

airflow/providers/src/airflow/providers/google/ads/hooks/ads.py

Line 113 in 0962c28

self.api_version = api_version or self.default_api_version

airflow/providers/src/airflow/providers/google/ads/hooks/ads.py

Line 104 in 0962c28

default_api_version = "v18"

which is forward to the GoogleAdsClient

airflow/providers/src/airflow/providers/google/ads/hooks/ads.py

Line 192 in 0962c28

return client.get_service("GoogleAdsService", version=self.api_version)

I checked and the client has it's own default.

https://github.com/googleads/google-ads-python/blob/6c205c4abdf95a18c70b938e37f448660b280da9/google/ads/googleads/client.py#L35

This means that we can change self.api_version to be default of None. if user wants to set it they can otherwise it uses the underlying SDK default (whatever that may be)

[VladaZakharova]

Can we maybe change our approach to the default version?

We have default value in our hook

airflow/providers/src/airflow/providers/google/ads/hooks/ads.py

Line 113 in 0962c28

self.api_version = api_version or self.default_api_version

airflow/providers/src/airflow/providers/google/ads/hooks/ads.py

Line 104 in 0962c28

default_api_version = "v18"

which is forward to the GoogleAdsClient

airflow/providers/src/airflow/providers/google/ads/hooks/ads.py

Line 192 in 0962c28

return client.get_service("GoogleAdsService", version=self.api_version)

I checked and the client has it's own default.

https://github.com/googleads/google-ads-python/blob/6c205c4abdf95a18c70b938e37f448660b280da9/google/ads/googleads/client.py#L35

This means that we can change self.api_version to be default of None. if user wants to set it they can otherwise it uses the underlying SDK default (whatever that may be)

wow, this is really good idea, thank you so much! I will update the code