(maint) Bump Ruby in static analysis workflow

Bump Ruby version in the static code analysis workflow to 2.6, as 2.5
will be EOL soon.

diff --git a/.github/workflows/static_code_analysis.yaml b/.github/workflows/static_code_analysis.yaml
index 89c2cd434f0d5c313efcd2ae130ce5d21a67773f..9a132eb865fcaa104700656c954859fab5f76d54 100644 (file)
--- a/.github/workflows/static_code_analysis.yaml
+++ b/.github/workflows/static_code_analysis.yaml
@@ -12,7 +12,7 @@ jobs:
     name: Run checks
 
     env:
-      ruby_version: 2.5
+      ruby_version: 2.6
       extra_checks: check:symlinks check:git_ignore check:dot_underscore check:test_file
 
     runs-on: 'ubuntu-18.04'