doc: regenerate groff and html man pages

doc/age-keygen.1

@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.9.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.9.1
-.TH "AGE\-KEYGEN" "1" "April 2023" ""
+.TH "AGE\-KEYGEN" "1" "June 2024" ""
 .SH "NAME"
 \fBage\-keygen\fR \- generate age(1) key pairs
 .SH "SYNOPSIS"

doc/age-keygen.1.html

@@ -137,7 +137,7 @@ age1ql3z7hjy54pw3hyww5ayyfg7zqgvc7w3j2elw8zmrj2kg5sfn9aqmcac8p
 
   <ol class='man-decor man-foot man foot'>
     <li class='tl'></li>
-    <li class='tc'>April 2023</li>
+    <li class='tc'>June 2024</li>
     <li class='tr'>age-keygen(1)</li>
   </ol>
 

doc/age.1

@@ -1,6 +1,6 @@
 .\" generated with Ronn-NG/v0.9.1
 .\" http://github.com/apjanke/ronn-ng/tree/0.9.1
-.TH "AGE" "1" "April 2023" ""
+.TH "AGE" "1" "June 2024" ""
 .SH "NAME"
 \fBage\fR \- simple, modern, and secure file encryption
 .SH "SYNOPSIS"

doc/age.1.html

@@ -432,7 +432,7 @@ $ age -d -i age-yubikey-identity-388178f3.txt secrets.txt.age
 
   <ol class='man-decor man-foot man foot'>
     <li class='tl'></li>
-    <li class='tc'>April 2023</li>
+    <li class='tc'>June 2024</li>
     <li class='tr'>age(1)</li>
   </ol>