Mozilla just released Firefox 124.0, adding some fresh features while eliminating several security vulnerabilities. What’s new: “Caret Browsing” now also works in the PDF viewer. With Caret Browsing, which is part of the browser’s accessibility features, you can place a cursor in the text on a web page in Firefox and then control it with the arrow keys. You activate Caret Browsing in Firefox by pressing the F7 key. Click on “Yes” in the pop-up that opens, then click in the text with the cursor and use the arrow keys to move the cursor. Another click on F7 ends Caret Browsing again. In the Fire…