Upgrade to Expat 2.8.2

Security release fixing 13 vulnerabilities.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: skeeto

Dockerfile

@@ -61,8 +61,8 @@ RUN curl --insecure --location --remote-name-all --remote-header-name \
 FROM base AS dl-gdb
 ARG GDB_VERSION=17.2 \
     GDB_SHA256=1c036c0d72e4b3d1fb5c94c88632add6f9d76f4d7c4d2ea793c12a9f19a3228c \
-    EXPAT_VERSION=2.8.1 \
-    EXPAT_SHA256=10b195ee78160a908388180a8fe3603d4e9a12f4755fbf5f3816b23a9d750da0 \
+    EXPAT_VERSION=2.8.2 \
+    EXPAT_SHA256=3ad89b8588e6644bd4e49981480d48b21289eebbcd4f0a1a4afb1c29f99b6ab4 \
     LIBICONV_VERSION=1.19 \
     LIBICONV_SHA256=88dd96a8c0464eca144fc791ae60cd31cd8ee78321e67397e25fc095c4a19aa6
 WORKDIR /dl