Upgrade pip when doing CI (#6234)

* Upgrade pip when doing CI

* Don't forget Github CI

.github/workflows/github-torch-hub.yml

@@ -20,6 +20,7 @@ jobs:
         python-version: 3.7
     - name: Install dependencies
       run: |
+        pip install --upgrade pip
         pip install torch
         pip install numpy tokenizers filelock requests tqdm regex sentencepiece sacremoses packaging
 

.github/workflows/self-push.yml

@@ -35,6 +35,7 @@ jobs:
     - name: Install dependencies
       run: |
         source .env/bin/activate
+        pip install --upgrade pip
         pip install torch
         pip install .[sklearn,testing]
 

.github/workflows/self-scheduled.yml

@@ -31,6 +31,7 @@ jobs:
     - name: Install dependencies
       run: |
         source .env/bin/activate
+        pip install --upgrade pip
         pip install .[sklearn,torch,testing]
 
     - name: Are GPUs recognized by our DL frameworks