[Tests] Make sure that we don't run tests multiple times (#5949)

* [Tests] Make sure that we don't run tests mulitple times

* [Tests] Make sure that we don't run tests mulitple times

* [Tests] Make sure that we don't run tests mulitple times

.github/workflows/pr_test_fetcher.yml

-name: Fast tests for PRs
+name: Fast tests for PRs - Test Fetcher
 
 on:
   pull_request:
@@ -14,6 +14,10 @@ env:
   MKL_NUM_THREADS: 4
   PYTEST_TIMEOUT: 60
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   setup_pr_tests:
     name: Setup PR Tests

.github/workflows/push_tests_fast.yml

@@ -5,6 +5,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 env:
   DIFFUSERS_IS_CI: yes
   HF_HOME: /mnt/cache

.github/workflows/push_tests_mps.yml

@@ -13,6 +13,10 @@ env:
   PYTEST_TIMEOUT: 600
   RUN_SLOW: no
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   run_fast_tests_apple_m1:
     name: Fast PyTorch MPS tests on MacOS