Move from set-output to $GITHUB_OUTPUT

https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

.github/actions/build-dependencies/action.yml

@@ -34,7 +34,7 @@ runs:
     - name: Get nightly version to use
       id: nightly
       shell: bash
-      run: echo "::set-output name=version::$(cat .github/nightly-version)"
+      run: echo "version=$(cat .github/nightly-version)" >> $GITHUB_OUTPUT
 
     - name: Install WASM toolchain
       uses: actions-rs/toolchain@v1

.github/workflows/monthly-nightly-update.yml

@@ -28,7 +28,7 @@ jobs:
           git commit -m "Update nightly"
           git push -u origin $(date +"nightly-%Y-%m")
 
-          echo "::set-output name=commit::$(git rev-parse HEAD)"
+          echo "name=commit::$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
 
       - name: Pull Request
         uses: actions/github-script@v6

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
 
       - name: Get nightly version to use
         id: nightly
-        run: echo "::set-output name=version::$(cat .github/nightly-version)"
+        run: echo "version=$(cat .github/nightly-version)" >> $GITHUB_OUTPUT
 
       - name: Build Dependencies
         uses: ./.github/actions/build-dependencies
@@ -49,7 +49,7 @@ jobs:
 
       - name: Get nightly version to use
         id: nightly
-        run: echo "::set-output name=version::$(cat .github/nightly-version)"
+        run: echo "version=$(cat .github/nightly-version)" >> $GITHUB_OUTPUT
 
       # Doesn't grab the cache as it's not needed
       - name: Install rustfmt