Update dependency triangulum to v0.26.2

Author: renovate[bot]

Gemfile

@@ -92,6 +92,6 @@ gem 'image_processing', '>= 1.2'
 
 gem 'json-schema', '~> 6.0'
 
-gem 'triangulum', '0.26.0'
+gem 'triangulum', '0.26.2'
 
 gem 'benchmark'

Gemfile.lock

@@ -387,7 +387,7 @@ GEM
     test-prof (1.6.1)
     thor (1.5.0)
     timeout (0.6.1)
-    triangulum (0.26.0)
+    triangulum (0.26.2)
       base64 (~> 0.3)
       json (~> 2.19)
       open3 (~> 0.2)
@@ -448,7 +448,7 @@ DEPENDENCIES
   simplecov (~> 0.22.0)
   simplecov-cobertura (~> 3.0)
   test-prof (~> 1.0)
-  triangulum (= 0.26.0)
+  triangulum (= 0.26.2)
   tucana (= 0.0.75)
   tzinfo-data