I'm have an M1 Macbook Pro 14'" (2021), and after updating to 12.5.1 I get:
Your Mac is up to date -- macOS Monterey 12.5.1
However, one day after updating to 12.5.1 I Shut Down my Macbook to clean the screen and the keyboard, and my Macbook kept starting up while attempting to clean the keyboard. I tried Shut Down several times, but my Macbook kept launching the startup screen, so I went about cleaning my Macbook while it was on.
After I was done cleaning my Macbook, I could not log in. I got the reaction that happens when you enter an incorrect password--kind of a shake. I checked the caps lock, etc, and I clicked on Shut Down or ReStart on the login screen several times but after attempting to log in about 15 times, I gave up, and I was resigned to bringing my Macbook into an Apple Store. Then I clicked on Shut Down, and I let my computer sit for about two minutes, then I tried logging in one more time, and I was successful. I have no idea why logging in worked the last time and not the other times.