Fix windows tests related to old conda on circleci (#2704)

Summary:
Conda version on circleCI prints following message:
```
==> WARNING: A newer version of conda exists. <==
  current version: 4.6.14
  latest version: 4.14.0
```
and as a result this error:

```
+ /c/tools/miniconda3/Scripts/conda.exe install -v -y -c pytorch-nightly -c nvidia pytorch numpy ffmpeg pytorch-cuda=11.6
Collecting package metadata: ...working... done
Solving environment: ...working...

Too long with no output (exceeded 30m0s): context deadline exceeded
```

This should update the conda version running on the system and allow us to install pytorch and run some tests.

Pull Request resolved: https://github.com/pytorch/audio/pull/2704

Reviewed By: weiwangmeta

Differential Revision: D39820037

Pulled By: atalman

fbshipit-source-id: 4a82a7a6cbe3dc1a5807ac669e2fa79f454037fa

.circleci/config.yml

@@ -500,6 +500,7 @@ jobs:
           command: |
             set -x
             eval "$('/C/tools/miniconda3/Scripts/conda.exe' 'shell.bash' 'hook')"
+            conda update -y conda
             conda env remove -n python${PYTHON_VERSION} || true
             conda create -yn python${PYTHON_VERSION} python=${PYTHON_VERSION}
             conda activate python${PYTHON_VERSION}
@@ -534,6 +535,7 @@ jobs:
           command: |
             set -x
             eval "$('/C/tools/miniconda3/Scripts/conda.exe' 'shell.bash' 'hook')"
+            conda update -y conda
             conda env remove -n python${PYTHON_VERSION} || true
             conda create -yn python${PYTHON_VERSION} python=${PYTHON_VERSION}
             conda activate python${PYTHON_VERSION}
@@ -570,6 +572,7 @@ jobs:
           command: |
             set -x
             eval "$('/C/tools/miniconda3/Scripts/conda.exe' 'shell.bash' 'hook')"
+            conda update -y conda
             conda env remove -n python${PYTHON_VERSION} || true
             conda create -yn python${PYTHON_VERSION} python=${PYTHON_VERSION}
             conda activate python${PYTHON_VERSION}

.circleci/config.yml.in

@@ -500,6 +500,7 @@ jobs:
           command: |
             set -x
             eval "$('/C/tools/miniconda3/Scripts/conda.exe' 'shell.bash' 'hook')"
+            conda update -y conda
             conda env remove -n python${PYTHON_VERSION} || true
             conda create -yn python${PYTHON_VERSION} python=${PYTHON_VERSION}
             conda activate python${PYTHON_VERSION}
@@ -534,6 +535,7 @@ jobs:
           command: |
             set -x
             eval "$('/C/tools/miniconda3/Scripts/conda.exe' 'shell.bash' 'hook')"
+            conda update -y conda
             conda env remove -n python${PYTHON_VERSION} || true
             conda create -yn python${PYTHON_VERSION} python=${PYTHON_VERSION}
             conda activate python${PYTHON_VERSION}
@@ -570,6 +572,7 @@ jobs:
           command: |
             set -x
             eval "$('/C/tools/miniconda3/Scripts/conda.exe' 'shell.bash' 'hook')"
+            conda update -y conda
             conda env remove -n python${PYTHON_VERSION} || true
             conda create -yn python${PYTHON_VERSION} python=${PYTHON_VERSION}
             conda activate python${PYTHON_VERSION}