Bump tempfile from 0.2.1 to 0.3.1

Bumps [tempfile](https://github.com/ruby/tempfile) from 0.2.1 to 0.3.1.
- [Release notes](https://github.com/ruby/tempfile/releases)
- [Commits](ruby/tempfile@v0.2.1...v0.3.1)

---
updated-dependencies:
- dependency-name: tempfile
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -140,7 +140,7 @@ GEM
     stringio (3.1.2)
     strong_json (2.1.2)
     strscan (3.1.2)
-    tempfile (0.2.1)
+    tempfile (0.3.1)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     test-unit (3.6.2)
@@ -149,6 +149,7 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)
+    uri (1.0.2)
     zlib (3.2.0)
 
 PLATFORMS