Run daily workflow on main repo only (no forks). (#7646)

(cherry picked from commit 944cca98c8)

.github/workflows/daily.yml

@@ -12,6 +12,7 @@ jobs:
 
   test-ubuntu-jemalloc:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     timeout-minutes: 14400
     steps:
     - uses: actions/checkout@v2
@@ -30,6 +31,7 @@ jobs:
 
   test-ubuntu-libc-malloc:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     timeout-minutes: 14400
     steps:
     - uses: actions/checkout@v2
@@ -48,6 +50,7 @@ jobs:
 
   test-ubuntu-32bit:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     timeout-minutes: 14400
     steps:
     - uses: actions/checkout@v2
@@ -70,6 +73,7 @@ jobs:
 
   test-ubuntu-tls:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     timeout-minutes: 14400
     steps:
     - uses: actions/checkout@v2
@@ -90,6 +94,7 @@ jobs:
 
   test-valgrind:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     timeout-minutes: 14400
     steps:
     - uses: actions/checkout@v2
@@ -104,6 +109,7 @@ jobs:
 
   test-centos7-jemalloc:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     container: centos:7
     timeout-minutes: 14400
     steps:
@@ -126,6 +132,7 @@ jobs:
 
   test-centos7-tls:
     runs-on: ubuntu-latest
+    if: github.repository == 'redis/redis'
     container: centos:7
     timeout-minutes: 14400
     steps: