[ruby/tmpdir] Bump version to 0.1.2

https://github.com/ruby/tmpdir/commit/c79bc7adf6
2021-04-05 21:06:23 +09:00 · 2021-04-05 21:06:23 +09:00 · a00d92326c
--- a/lib/tmpdir.gemspec
+++ b/lib/tmpdir.gemspec
@ -1,6 +1,6 @@
 Gem::Specification.new do |spec|
  spec.name          = "tmpdir"
-  spec.version       = "0.1.1"
+  spec.version       = "0.1.2"
  spec.authors       = ["Yukihiro Matsumoto"]
  spec.email         = ["matz@ruby-lang.org"]