Update Copyright year to 2025

Summary: Similar to D15238

Test Plan:
Look at calendar... yep it's 2025

ninja
./src/bitcoind --version
./src/qt/bitcoin-qt --version

Reviewers: #bitcoin_abc, bytesofman

Reviewed By: #bitcoin_abc, bytesofman

Differential Revision: https://reviews.bitcoinabc.org/D17509