release: Kata Containers 1.13.0-alpha0

- github: Enable github actions
- documentation: Add a direct link to spell-checking documentation
- install: Improve snap documentation
- threat-model: add initial document
- docs: Document restricted annotations
- docs: Add a link to document describing how to use annotations
- modify the error url of logfmt

ea71136 github: Enable github actions
aa3dda8 install: Improve snap documentation
4d1346c documentation: Add a direct link to spell-checking documentation
c51180a threat-model: introduce initial document
4809aee docs: Document restricted annotations
0bd878b docs: Add a link to document describing how to use annotations
7f3bd7a docs: modify the error url of logfmt

Signed-off-by: Eric Ernst <eric_ernst@apple.com>

VERSION

@@ -1 +1 @@
-1.12.0-rc0
+1.13.0-alpha0