Revert the change of LUCENE_PREVIOUS_MAJOR_RELEASE, as previous major is still 7.7.x
diff --git a/pelicanconf.py b/pelicanconf.py
index 195f8dd..fb96b28 100755
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -12,7 +12,7 @@
 
 LUCENE_LATEST_RELEASE = '8.8.1'
 LUCENE_LATEST_RELEASE_DATE = datetime(2021, 2, 22)
-LUCENE_PREVIOUS_MAJOR_RELEASE = '8.7.0'
+LUCENE_PREVIOUS_MAJOR_RELEASE = '7.7.3'
 
 # This string will be appended to all unversioned css and js resources to prevent caching surprises on edits.
 # The theme's htaccess file also sets a cache-control header with longer lifetime, if the v=XXXX query string is added.