Remove go 1.19 support, bump minimum to go 1.20 and add testing for 1.21 (#8208)

Fixes #8207

---------

Co-authored-by: bryan-aguilar <[email protected]>

Author: mx-psi

.chloggen/mx-psi_refactor-service-telemetry.yaml

@@ -0,0 +1,18 @@
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: all
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Remove go 1.19 support, bump minimum to go 1.20 and add testing for 1.21
+
+# One or more tracking issues or pull requests related to the change
+issues: [8207]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+change_logs: [api]

.github/workflows/api-compatibility.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
 
       # Generate apidiff states of Main
       - name: Generate-States

.github/workflows/build-and-test-windows.yaml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         uses: actions/cache@v3
         env:

.github/workflows/build-and-test.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         id: go-cache
         uses: actions/cache@v3
@@ -41,7 +41,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         id: go-cache
         uses: actions/cache@v3
@@ -64,7 +64,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         id: go-cache
         uses: actions/cache@v3
@@ -88,7 +88,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         id: go-cache
         uses: actions/cache@v3
@@ -133,7 +133,7 @@ jobs:
   unittest-matrix:
     strategy:
       matrix:
-        go-version: ["1.20", 1.19] # 1.20 needs quotes otherwise it's interpreted as 1.2
+        go-version: ["1.21", "1.20"] # 1.20 needs quotes otherwise it's interpreted as 1.2
     runs-on: ubuntu-latest
     needs: [setup-environment]
     steps:
@@ -249,7 +249,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         id: go-cache
         uses: actions/cache@v3

.github/workflows/builder-integration-test.yaml

@@ -30,6 +30,6 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Test
         run: make builder-integration-test

.github/workflows/builder-release.yaml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v4
         with:

.github/workflows/changelog.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Cache Go
         id: go-cache
         uses: actions/cache@v3

.github/workflows/codeql-analysis.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/contrib-tests.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Run Contrib Tests
         run: |
           contrib_path=/tmp/opentelemetry-collector-contrib

.github/workflows/create-dependabot-pr.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: ~1.19.12
+          go-version: ~1.20.7
       - name: Run dependabot-pr.sh
         run: ./.github/workflows/scripts/dependabot-pr.sh
         env: