Bump Jekyll to 3.7 to fix security vulnerabilities
Bump Jekyll to 3.7 to fix security vulnerabilities

wordsforthewise/wordsforthewise.github.io,dfreniche/hpstr-jekyll-theme,wordsforthewise/wordsforthewise.github.io,dfreniche/hpstr-jekyll-theme,a5anka/a5anka.github.io,wordsforthewise/wordsforthewise.github.io,a5anka/a5anka.github.io,dfreniche/hpstr-jekyll-theme,mmistakes/hpstr-jekyll-theme,mmistakes/hpstr-jekyll-theme,mmistakes/hpstr-jekyll-theme,a5anka/a5anka.github.io