Update self-hosted changelog: v0.115.4 (#5624)

Co-authored-by: thesandlord <8902396+thesandlord@users.noreply.github.com>

Author: fern-support

fern/products/docs/pages/self-hosted/changelog/2026-05-27.mdx

@@ -0,0 +1,7 @@
+### v0.115.4
+
+```dockerfile
+FROM fernenterprise/fern-self-hosted:0.115.4
+```
+
+Digest: `sha256:5e3f8cde27b83668b358d8452679b185f7e64c8252e4cf76c81fcb222d8fdaa1`