Use merged version of some actions

Author: Skptak

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
           echo ${EXCLUDE[@]} | xargs lcov --rc lcov_branch_coverage=1 -r build/coverage.info -o build/coverage.info
           lcov --rc lcov_branch_coverage=1 --list build/coverage.info
       - name: Check Coverage
-        uses: FreeRTOS/CI-CD-Github-Actions/coverage-cop@v2
+        uses: FreeRTOS/CI-CD-Github-Actions/coverage-cop@main
         with:
           coverage-file: ./build/coverage.info
 
@@ -51,7 +51,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Check complexity
-        uses: FreeRTOS/CI-CD-Github-Actions/complexity@v2
+        uses: FreeRTOS/CI-CD-Github-Actions/complexity@main
         with:
           path: ./
 
@@ -151,7 +151,7 @@ jobs:
           fetch-depth: 0
 
       - name: Run manifest verifier
-        uses: FreeRTOS/CI-CD-GitHub-Actions/manifest-verifier@v2
+        uses: FreeRTOS/CI-CD-GitHub-Actions/manifest-verifier@main
         with:
           path: ./
           fail-on-incorrect-version: true