Update deno version to 1.28.2

Author: ryo-ma

.github/workflows/latest-release.yml

@@ -20,7 +20,7 @@ jobs:
           fetch-depth: 0
       - uses: denoland/setup-deno@v1
         with:
-          deno-version: v1.27.0
+          deno-version: v1.28.2
       - name: Run cross-compile
         run:
           ./cross_compile.sh

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Setup Deno runtime
         uses: denoland/setup-deno@v1
         with:
-          deno-version: v1.27.0
+          deno-version: v1.28.2
 
       - name: Check format
         run: deno fmt --check

README.md

@@ -332,7 +332,7 @@ $ dim help
 
 1. Install Deno
 
-- Deno >= 1.27.0
+- Deno == 1.28.2
 
 ```
 $ curl -fsSL https://deno.land/install.sh | sh