SiteKit Newsletter 5.23.0 (19.05.2025)

#Fixes

• deps: update dependency com.opencsv:opencsv to v5.11 (022705f)

#Other

• release: Release 5.23.0 (36f6135)
• update newsletter-php dependency to 5.14.0 (cc2a61b)
• release: Set version for next development iteration [skip ci] (78253ee)