chore(style): enforce final newlines

.editorconfig

@@ -5,7 +5,7 @@ charset = utf-8
 end_of_line = lf
 indent_size = 4
 indent_style = space
-insert_final_newline = false
+insert_final_newline = true
 max_line_length = 120
 tab_width = 4
 ij_continuation_indent_size = 8

build.gradle.kts

@@ -46,11 +46,13 @@ spotless {
     kotlinGradle {
         target("*.gradle.kts", "gradle/**/*.gradle.kts")
         ktlint()
+        endWithNewline()
     }
 
     format("misc") {
         target("*.md", "*.yml", "*.yaml", "*.properties", ".editorconfig")
         trimTrailingWhitespace()
+        endWithNewline()
     }
 }