I'd be grateful if you didn't change my password.
Your passwords on more sensitive sites than SPCR might or might not have been compromised years ago by bugs you never heard about, by breaches unrelated to bugs or even by design.
The new announcement about this old bug is mainly for people who run servers or sites.
But of course it never hurts to periodically change your important passwords and not use the same ones on many sites (or equivalent). Don't forget to change other stuff as well because it's not only passwords which are affected. The important thing to realize is that this isn't something you should do only this once.