build(deps): upgrade setup-protoc action and protoc version number

`arduino/setup-protoc@v3` could not find our old version number of `3.20.2`.

I chose protoc version 27.4 because it's the last release from the prior version.

Author: Michael-J-Ward

.github/workflows/build.yml

@@ -92,9 +92,9 @@ jobs:
           path: .
 
       - name: Install Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v3
         with:
-          version: "3.20.2"
+          version: "27.4"
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build Python package
@@ -150,9 +150,9 @@ jobs:
           path: .
 
       - name: Install Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v3
         with:
-          version: "3.20.2"
+          version: "27.4"
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build Python package

.github/workflows/docs.yaml

@@ -52,9 +52,9 @@ jobs:
           python-version: "3.11"
 
       - name: Install Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v3
         with:
-          version: '3.20.2'
+          version: '27.4'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install dependencies

.github/workflows/test.yaml

@@ -50,9 +50,9 @@ jobs:
           override: true
 
       - name: Install Protoc
-        uses: arduino/setup-protoc@v1
+        uses: arduino/setup-protoc@v4
         with:
-          version: '3.20.2'
+          version: '27.4'
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Setup Python