Decrease default number of puma workers from 5 to 2

Update default bundler version to 2.3.14
Update default puma version to 4.3.12

.github/workflows/run-tests.yml

@@ -12,9 +12,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Setup Go
-      uses: actions/setup-go@v1
+      uses: actions/setup-go@v2.1.4
       with:
-        go-version: 1.16
+        go-version: 1.18.x
     - name: Checkout
       uses: actions/checkout@v2
     - name: Run Unit Tests
@@ -26,9 +26,9 @@ jobs:
     needs: unit
     steps:
     - name: Setup Go
-      uses: actions/setup-go@v1
+      uses: actions/setup-go@v2.1.4
       with:
-        go-version: 1.16
+        go-version: 1.18.x
     - name: Checkout
       uses: actions/checkout@v2
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/* || true

buildpack.toml

@@ -10,13 +10,13 @@ api = "0.8"
   pre-package = "./scripts/build.sh"
 
   [metadata.configuration]
-    default_bundler_version = "2.2.24"
+    default_bundler_version = "2.3.14"
 
     install_puma = true
     [metadata.configuration.puma]
-      version = "4.3.8"
+      version = "4.3.12"
       bind = "tcp://0.0.0.0:8080"
-      workers = "5"
+      workers = "2"
       threads = "5"
       preload = true