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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This MR has been generated by Renovate Bot.

patches/themes/0165-twentyeleven-footer.patch

 --- footer.php	2020-12-09 00:14:38.000000000 -0800
 +++ footer.php.patched	2021-02-21 22:43:25.579771689 -0800
 @@ -31,12 +31,7 @@
- 					the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
- 				}
- 				?>
--				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyeleven' ) ); ?>" class="imprint" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentyeleven' ); ?>">
--					<?php
--					/* translators: %s: WordPress */
--					printf( __( 'Proudly powered by %s', 'twentyeleven' ), 'WordPress' );
--					?>
--				</a>
-+				<strong>Proudly powered by <a href="http://www.autistici.org">R*</a></strong>
- 			</div>
- 	</footer><!-- #colophon -->
- </div><!-- #page -->
+ 					the_privacy_policy_link( '', '<span role="separator" aria-hidden="true"></span>' );
+ 				}
+ 				?>
+-				<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyeleven' ) ); ?>" class="imprint" title="<?php esc_attr_e( 'Semantic Personal Publishing Platform', 'twentyeleven' ); ?>">
+-					<?php
+-					/* translators: %s: WordPress */
+-					printf( __( 'Proudly powered by %s', 'twentyeleven' ), 'WordPress' );
+-					?>
+-				</a>
++				<strong>Proudly powered by <a href="http://www.autistici.org">R*</a></strong>
+ 			</div>
+ 	</footer><!-- #colophon -->
+ </div><!-- #page -->