Update blog post to contain some release notes

i2p2www/blog/2024/05/06/i2p_2.5.1_released.rst

@@ -22,6 +22,20 @@ As usual, we recommend that you update to this release.
 The best way to maintain security and help the network is to run the latest release.
 {%- endtrans %}
 
+**{% trans %}RELEASE DETAILS{% endtrans %}**
+
+**{% trans %}Changes{% endtrans %}**
+
+- {% trans %}Susimail: Add search box{% endtrans %}
+- {% trans %}Susimail: UI Improvements{% endtrans %}
+- {% trans %}NetDB: Don't lookup RI if on banlist{% endtrans %}
+
+**{% trans %}Bug Fixes{% endtrans %}**
+
+- {% trans %}Sybil: Disable IP-Closeness Checks in Sybil Attack Analysis Tool{% endtrans %}
+- {% trans %}Profiles: Don't update last heard from if tunnel fails{% endtrans %}
+- {% trans %}NetDB: Improve validation of RI's before storing, sending RI's{% endtrans %}
+
 **{% trans %}SHA256 Checksums:{% endtrans %}**
 
 ::