Update githubactions versions

Author: gcotelli

.github/workflows/loading-groups.yml

@@ -12,7 +12,7 @@ jobs:
         load-spec: [ deployment, dependent-sunit-extensions, tests, tools, development ]
     name: ${{ matrix.smalltalk }} + ${{ matrix.load-spec }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: hpi-swa/setup-smalltalkCI@v1
         with:
           smalltalk-image: ${{ matrix.smalltalk }}

.github/workflows/unit-tests.yml

@@ -10,7 +10,7 @@ jobs:
         smalltalk: [ Pharo64-10, Pharo64-9.0, Pharo64-8.0, Pharo64-7.0, Pharo32-7.0 ]
     name: ${{ matrix.smalltalk }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: hpi-swa/setup-smalltalkCI@v1
         with:
           smalltalk-image: ${{ matrix.smalltalk }}
@@ -23,3 +23,4 @@ jobs:
         uses: codecov/codecov-action@v3
         with:
           name: Unit-Tests-${{matrix.smalltalk}}
+          token: ${{ secrets.CODECOV_TOKEN }}