Build: Reference GitHub Actions by commit SHAs

The SHAs are verified to come from the original repositories and not forks.

For reference:

https://github.com/github/codeql-action/releases/tag/v2.3.6
83f0fe6c49

https://github.com/actions/checkout/releases/tag/v3.5.2
8e5e7e5ab8

https://github.com/actions/cache/releases/tag/v3.3.1
88522ab9f3

https://github.com/actions/setup-node/releases/tag/v3.6.0
64ed1c7eab

Fixes gh-5266
Closes gh-5269

Signed-off-by: Gabriela Gutierrez <gabigutierrez@google.com>

.github/workflows/codeql-analysis.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
@@ -33,7 +33,7 @@ jobs:
       
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6
       # Override language selection by uncommenting this and choosing your languages
       # with:
       #   languages: go, javascript, csharp, python, cpp, java
@@ -41,7 +41,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -55,4 +55,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@83f0fe6c4988d98a455712a27f0255212bba9bd4 # v2.3.6

.github/workflows/node.js.yml

@@ -46,10 +46,10 @@ jobs:
             BROWSERS: "FirefoxHeadless"
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
 
     - name: Cache
-      uses: actions/cache@v3
+      uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # v3.3.1
       with:
         path: ~/.npm
         key: ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-npm-lock-${{ hashFiles('**/package-lock.json') }}
@@ -57,7 +57,7 @@ jobs:
           ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-npm-lock-
 
     - name: Use Node.js ${{ matrix.NODE_VERSION }}
-      uses: actions/setup-node@v3.6.0
+      uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
       with:
         node-version: ${{ matrix.NODE_VERSION }}