[Glitch] Run eslint --fix

I don't like it changing files this way, but it's basically what
c49213f0ea and a few others did.

app/javascript/flavours/glitch/components/column_header.js

@@ -55,39 +55,39 @@ class ColumnHeader extends React.PureComponent {
     } else {
       this.context.router.history.push('/');
     }
-  }
+  };
 
   handleToggleClick = (e) => {
     e.stopPropagation();
     this.setState({ collapsed: !this.state.collapsed, animating: true });
-  }
+  };
 
   handleTitleClick = () => {
     this.props.onClick?.();
-  }
+  };
 
   handleMoveLeft = () => {
     this.props.onMove(-1);
-  }
+  };
 
   handleMoveRight = () => {
     this.props.onMove(1);
-  }
+  };
 
   handleBackClick = (event) => {
     this.historyBack(event.shiftKey);
-  }
+  };
 
   handleTransitionEnd = () => {
     this.setState({ animating: false });
-  }
+  };
 
   handlePin = () => {
     if (!this.props.pinned) {
       this.historyBack();
     }
     this.props.onPin();
-  }
+  };
 
   render () {
     const { title, icon, active, children, pinned, multiColumn, extraButton, showBackButton, intl: { formatMessage }, placeholder, appendContent, collapseIssues } = this.props;