Update dependency wpackagist-plugin/buddypress to v9

This MR contains the following updates:

Package	Type	Update	Change
wpackagist-plugin/buddypress (source)	require	major	7.3.0 -> 9.1.1

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composer.json

@@ -106,7 +106,7 @@
         "wpackagist-plugin/wordpress-importer": "0.7",
         "wpackagist-plugin/wp-recaptcha-bp": "4.1",
         "wpackagist-plugin/wp2pgpmail": "1.28",
-        "wpackagist-plugin/buddypress": "7.3.0",
+        "wpackagist-plugin/buddypress": "9.0.0",
         "noblogs/noblogs-home": "0.1.3",
         "wpackagist-plugin/katex": "2.1.2",
         "noblogs/eu-compliance": "0.1.0",