Fixed workflows to not run twice unnecessarily

.github/workflows/auto-approve.yml

@@ -1,6 +1,5 @@
 name: Auto approve
-on: pull_request
-
+on: [pull_request]
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/codecov.yml

@@ -1,5 +1,9 @@
 name: Coverage
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 jobs:
   test:
     name: Test and Report

.github/workflows/docker.yml

@@ -1,5 +1,9 @@
 name: Docker
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 jobs:
   build:
     name: Build Image

.github/workflows/go.yml

@@ -1,5 +1,9 @@
 name: Go
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 jobs:
   test:
     name: Build and Test

.github/workflows/greetings.yml

@@ -1,7 +1,5 @@
 name: Greetings
-
 on: [pull_request, issues]
-
 jobs:
   greeting:
     runs-on: ubuntu-latest

.github/workflows/label.yml

@@ -1,6 +1,5 @@
 name: Labeler
 on: [pull_request]
-
 jobs:
   label:
     runs-on: ubuntu-latest

.github/workflows/reviewdog.yml

@@ -1,5 +1,9 @@
 name: ReviewDog
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
 jobs:
   golangci-lint:
     name: runner / golangci-lint