Fix CI regressions from the H5F_LIBVER_V300/pline-v3 format change

- h5repack -h help text and its reference file still described the
  bound table as ending at H5F_LIBVER_V200 (5); add the V300 (6) entry
  and update the --high default, both stale since LATEST shifted from
  V200 to V300.
- Regenerate the ocpl_{32,64}{le,be} cross-platform plist golden files:
  H5Pencode now appends a has_config byte after each filter's
  cd_values, so the pre-existing binaries (predating this format
  change) decoded as garbage. All four variants are byte-identical
  since this plist's filter has no cd_values/config to vary by word
  size or endianness.

tools/src/h5repack/h5repack_main.c

@@ -229,8 +229,9 @@ usage(const char *prog, const pack_opt_t *options)
     PRINTVALSTREAM(rawoutstream, "        3: This is H5F_LIBVER_V112 in H5F_libver_t struct\n");
     PRINTVALSTREAM(rawoutstream, "        4: This is H5F_LIBVER_V114 in H5F_libver_t struct\n");
     PRINTVALSTREAM(rawoutstream, "        5: This is H5F_LIBVER_V200 in H5F_libver_t struct\n");
+    PRINTVALSTREAM(rawoutstream, "        6: This is H5F_LIBVER_V300 in H5F_libver_t struct\n");
     PRINTVALSTREAM(rawoutstream,
-                   "           (H5F_LIBVER_LATEST is aliased to H5F_LIBVER_V200 for this release\n");
+                   "           (H5F_LIBVER_LATEST is aliased to H5F_LIBVER_V300 for this release\n");
     PRINTVALSTREAM(rawoutstream, "\n");
     PRINTVALSTREAM(rawoutstream, "    FS_STRATEGY is a string indicating the file space strategy used:\n");
     PRINTVALSTREAM(rawoutstream, "        FSM_AGGR:\n");

tools/test/h5repack/expected/h5repack-help.txt

@@ -43,7 +43,7 @@ usage: h5repack [OPTIONS] file1 file2
                            (default is 1)
    --high=BOUND            The high bound for library release versions to use
                            when creating objects in the file
-                           (default is 5)
+                           (default is 6)
    --merge                 Follow external soft link recursively and merge data
    --prune                 Do not follow external soft links and remove link
    --merge --prune         Follow external link, merge data and remove dangling link
@@ -93,7 +93,8 @@ usage: h5repack [OPTIONS] file1 file2
         3: This is H5F_LIBVER_V112 in H5F_libver_t struct
         4: This is H5F_LIBVER_V114 in H5F_libver_t struct
         5: This is H5F_LIBVER_V200 in H5F_libver_t struct
-           (H5F_LIBVER_LATEST is aliased to H5F_LIBVER_V200 for this release
+        6: This is H5F_LIBVER_V300 in H5F_libver_t struct
+           (H5F_LIBVER_LATEST is aliased to H5F_LIBVER_V300 for this release
 
     FS_STRATEGY is a string indicating the file space strategy used:
         FSM_AGGR: