FTBFS: missing strl* symbols fail the build

See ubuntu-devel thread[1] and mantic rebuild report[2].

dpkg-gensymbols: error: some symbols or patterns disappeared in the symbols file: see diff output below
dpkg-gensymbols: warning: debian/libkafs0-heimdal/DEBIAN/symbols doesn't match completely debian/libkafs0-heimdal.symbols
--- debian/libkafs0-heimdal.symbols (libkafs0-heimdal_7.8.git20221117.28daf24+dfsg-3ubuntu1_amd64)
+++ dpkg-gensymbolshoPgEa 2023-09-05 02:37:15.654111977 +0000
@@ -12,7 +12,7 @@
  _kafs_get_cred@Base 1.4.0+git20110226
  _kafs_realm_of_cell@Base 1.4.0+git20110226
  _kafs_resolve_debug@Base 1.4.0+git20110226
- _kafs_strlcpy@Base 1.4.0+git20110226
+#MISSING: 7.8.git20221117.28daf24+dfsg-3ubuntu1# _kafs_strlcpy@Base 1.4.0+git20110226
  k_afs_cell_of_file@Base 1.4.0+git20110226
  k_hasafs@Base 1.4.0+git20110226
  k_hasafs_recheck@Base 1.4.0+git20110226
dh_makeshlibs: error: failing due to earlier errors
make[1]: *** [debian/rules:18: override_dh_makeshlibs] Error 25

This one might need a fix similar to the krb5 one[3].

1. https://lists.ubuntu.com/archives/ubuntu-devel/2023-September/042784.html
2. https://people.canonical.com/~ginggs/ftbfs-report/test-rebuild-20230830-mantic-mantic.html#ubuntu-server-team
3. https://launchpad.net/ubuntu/+source/krb5/1.20.1-3ubuntu1