Update dependency wpackagist-plugin/pubsubhubbub to v3.1.4

This MR contains the following updates:

Package	Type	Update	Change
wpackagist-plugin/pubsubhubbub (source)	require	patch	3.1.3 -> 3.1.4

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This MR has been generated by Renovate Bot.

mentioned in issue #41

added 3 commits

• e81fcb73...ff3afd5b - 2 commits from branch master
• 318f903f - Update dependency wpackagist-plugin/pubsubhubbub to v3.1.4

Compare with previous version

added 3 commits

• 318f903f...61f8c794 - 2 commits from branch master
• e3e36b42 - Update dependency wpackagist-plugin/pubsubhubbub to v3.1.4

Compare with previous version

added 3 commits

• e3e36b42...bc49dc60 - 2 commits from branch master
• cf5ac16e - Update dependency wpackagist-plugin/pubsubhubbub to v3.1.4

Compare with previous version

enabled an automatic merge when the pipeline for cf5ac16e succeeds

mentioned in commit 21acdf11

merged