Update dependabot config to ignore more A8c dependencies

[wzieba]

Which are problemattic for Dependabot, as they don't follow semantic versioning for PR builds. This should lower the number of Dependabot PRs that we have to close.

[dangermattic]

	1 Warning
:warning:	This PR is assigned to the milestone 25.8. This milestone is due in less than 4 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

Generated by :no_entry_sign: Danger

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[wpmobilebot]

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	Commit	65ccbfaf5763380194fe6d4feb35f5ae9f9ae5f7
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[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21470-65ccbfa
	Commit	65ccbfaf5763380194fe6d4feb35f5ae9f9ae5f7
	Direct Download	wordpress-prototype-build-pr21470-65ccbfa.apk

Note: Google Login is not supported on these builds.