Revert "Lock versions of plugins."
Revert "Lock versions of plugins."

This reverts commit a43aa01638b7edb492d0e57d3d1265eac5accd3b.

zs-engg/stripe-sdk,stripe/stripe-java,rgarbi/stripe-java,kbouzidi/stripe-java,hardtoe/stripe-java,shalecraig/stripe-java,AdamStelmaszczyk/stripe-java