Bug 1902848 - Update SeaMonkey website for 2.53.19 beta 1 release - fix news date and download links. r=me

src/news.en.xml

@@ -7,7 +7,7 @@ http://www.damowmow.com/portal/ (use the "Identify" field)
 -->
 
 <newsfeed title="SeaMonkey News" url="http://seamonkey-project.org/news">
-  <entry id="2023-07-18" showfront="true">
+  <entry id="2024-07-18" showfront="true">
     <headline>SeaMonkey 2.53.19 Beta 1 released</headline>
     <content type="html" xml:lang="en">
 <![CDATA[<p>

src/releases/2.53.19b1.en.html

@@ -1,5 +1,5 @@
 [%- PROCESS release.tmpl -%]
-[%- smversion = '2.53.19' -%]
+[%- smversion = '2.53.19b1' -%]
 [%- prettyversion = '2.53.19 Beta 1' -%]
 [%- relnoteversion = '2.53.19' -%]
 [%- mirrorred = false -%]