elf.h: Update RISC-V relocations

glibc: commit: 6f962278e24bdf5cb5f310c5a17add41da95407c

And then cut a patch release

Signed-off-by: Michal Biesek <[email protected]>
(adapted from commit ace831c)

Author: michalbiesek

ChangeLog.md

@@ -1,4 +1,10 @@
-## Release History
+# Release History
+
+## 0.16.4 (August 12, 2025)
+
+* Update to a later glibc `elf.h`.
+
+  This should not result in any behavioral changes, except for possibly better architecture-specific support.
 
 ## 0.15.3 (August 12, 2025)