!26 Upgrade to 2.1

From: @SuperSix173 
Reviewed-by: @wangbin224 
Signed-off-by: @wangbin224

libipt.spec

@@ -1,6 +1,6 @@
 Name:    libipt
-Version: 2.0.5
-Release: 2
+Version: 2.1
+Release: 1
 Summary: Intel(R) Processor Trace Decoder Library
 License: BSD
 URL:     https://github.com/intel/libipt
@@ -51,6 +51,14 @@ ctest -V %{?_smp_mflags}
 %{_libdir}/%{name}.so
 
 %changelog
+* Thu Jan 25 2024 liuchao <liuchao173@huawei.com> - 2.1-1
+- Upgrade to 2.1:
+  - a new tool 'ptseg' for finding the PSB segment for a given offset.
+  - a new layer 'evt' representing the trace as a list of events.
+  - event tracing (cfe and evd packets).
+  - C11 threads, if available.
+  - Bug fixes and support for latest processors.
+
 * Thu Feb 16 2023 Wenlong Zhang<zhangwenlong@loongson.cn> - 2.0.5-2
 - Add loongarch64 support