update some github actions to newer versions

drop testing of go 1.20

.github/actions/test/action.yml

@@ -7,7 +7,7 @@ inputs:
 runs:
   using: composite
   steps:
-    - uses: actions/setup-go@v3
+    - uses: actions/setup-go@v5
       with:
         go-version: ${{ inputs.go-version }}
     - run: make prep test

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           ref: master
       - run: git fetch --tags

.github/workflows/test.yml

@@ -7,21 +7,20 @@ jobs:
     runs-on: ubuntu-latest
     name: Lint
     steps:
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         with:
           go-version: '1.22'
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
+        uses: golangci/golangci-lint-action@v4
   build:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: ['1.20', '1.21', '1.22']
+        version: ['1.21', '1.22']
     name: Go ${{ matrix.version }}
     steps:
-      - uses: actions/checkout@v2
-      - name: Test
-        uses: ./.github/actions/test
+      - uses: actions/checkout@v4
+      - uses: ./.github/actions/test
         with:
           go-version: ${{ matrix.version }}