Fix seamonkey for python-3.11

xsoft/graphweb/seamonkey.xml

@@ -276,6 +276,15 @@ EOF</userinput></screen>
 
 <screen><userinput>grep -rl \"rU\" | xargs sed -i 's/"rU"/"r"/'</userinput></screen>
 
+    <para>
+      Then fix an issue with regular expressions in python-3.11:
+    </para>
+
+<screen><userinput>sed -e 's/?s)\./?s:.)/'               \
+    -e '/?m)/{s/?m)/?m:/;s/\$"/$)"/}' \
+    -e '/?s)%/{s/?s)/?s:/;s/?"/?)"/}' \
+    -i xpcom/idl-parser/xpidl/xpidl.py</userinput></screen>
+
     <para>
       Compile <application>SeaMonkey</application> by running the following
       commands: