Skip workflows on forks of spring-security

.github/workflows/algolia-index.yml

@@ -12,6 +12,7 @@ jobs:
   update:
     name: Update Algolia Index
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'spring-projects/spring-security' }}
     steps:
       - name: Checkout Source
         uses: actions/checkout@v2

.github/workflows/antora-generate.yml

@@ -16,6 +16,7 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'spring-projects/spring-security' }}
     steps:
       - name: Checkout Source
         uses: actions/checkout@v2

.github/workflows/backport-bot.yml

@@ -11,6 +11,7 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'spring-projects/spring-security' }}
     permissions:
       contents: read
       issues: write

.github/workflows/clean_build_artifacts.yml

@@ -9,6 +9,7 @@ permissions:
 jobs:
   main:
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'spring-projects/spring-security' }}
     permissions:
       contents: none
     steps:

.github/workflows/deploy-reference.yml

@@ -14,6 +14,7 @@ jobs:
   deploy:
     name: deploy
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'spring-projects/spring-security' }}
     steps:
       - uses: actions/checkout@v2
       - name: Set up gradle

.github/workflows/milestone-spring-releasetrain.yml

@@ -11,6 +11,7 @@ jobs:
   spring-releasetrain-checks:    
     name: Check DueOn is on a Release Date
     runs-on: ubuntu-latest
+    if: ${{ github.repository == 'spring-projects/spring-security' }}
     permissions:
       contents: none
     steps: