clang-format: copy latest and re-format

clang-format-16 has some backwards incompatible changes that require
additional settings for best compatibility and re-running the formatter.
Copy the latest .clang-format from the docs repository[1] and reformat
the repository.

[1] https://gerrit.openbmc.org/c/openbmc/docs/+/63441

Further, shift the fixup for C's `_Static_assert` into src/msgbuf.h to
prevent a clang-tidy-16 error:

```
/data0/jenkins/workspace/ci-repository/openbmc/libpldm/src/msgbuf.h:315:2: error: '_Static_assert' is a C11 extension [clang-diagnostic-c11-extensions,-warnings-as-errors]
        _Static_assert(sizeof(*dst) == sizeof(ldst),
        ^
```

And fix up the function prototype in the definition of `pldm_open()`:

```
../src/requester/pldm.c:128:16: error: a function declaration without a prototype is deprecated in all versions of C [clang-diagnostic-strict-prototypes,-warnings-as-errors]
void pldm_close()
               ^
                void
```

Change-Id: I57b53f51914e39237e733d024e62ab41b3d306c1
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/tests/libpldm_utils_test.cpp b/tests/libpldm_utils_test.cpp
index 663a531..0b787e5 100644
--- a/tests/libpldm_utils_test.cpp
+++ b/tests/libpldm_utils_test.cpp
@@ -84,7 +84,7 @@
 TEST(TimeLegal, TimeLegal)
 {
     EXPECT_EQ(true, is_time_legal(30, 25, 16, 18, 8, 2019));
-    EXPECT_EQ(true, is_time_legal(30, 25, 16, 29, 2, 2020)); // leap year
+    EXPECT_EQ(true, is_time_legal(30, 25, 16, 29, 2, 2020));   // leap year
 
     EXPECT_EQ(false, is_time_legal(30, 25, 16, 18, 8, 1960));  // year illegal
     EXPECT_EQ(false, is_time_legal(30, 25, 16, 18, 15, 2019)); // month illegal