chore: support Go 1.22 (#9482)

.github/workflows/apidiff.yml

@@ -19,7 +19,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-go@v5
       with:
-        go-version: '1.21.x'
+        go-version: '1.22.x'
     - name: Get changed directories
       id: changed_dirs
       # Ignore changes to the internal and root directories.
@@ -50,7 +50,7 @@ jobs:
     steps:
     - uses: actions/setup-go@v5
       with:
-        go-version: '1.21.x'
+        go-version: '1.22.x'
     - name: Install latest apidiff
       run: go install golang.org/x/exp/cmd/apidiff@latest
     - uses: actions/checkout@v4

.github/workflows/conformance.yaml

@@ -33,7 +33,7 @@ jobs:
     strategy:
       matrix:
         # Bigtable test proxy can be run on any of these Go versions
-        go: [ '1.19', '1.20', '1.21' ]
+        go: [ '1.19', '1.22']
         folders: ['bigtable']
     steps:
     - uses: actions/checkout@v4

.github/workflows/new_client.yml

@@ -20,7 +20,7 @@ jobs:
         fetch-depth: 2
     - uses: actions/setup-go@v5
       with:
-        go-version: 1.21.x
+        go-version: 1.22.x
     - name: Find new version files
       id: versions
       # Ignore changes to the internal and root directories.

.github/workflows/third_party_check.yml

@@ -17,7 +17,7 @@ jobs:
         fetch-depth: 2
     - uses: actions/setup-go@v5
       with:
-        go-version: 1.21.x
+        go-version: 1.22.x
     - name: Find modified go.mod files
       id: modfiles
       run: |

README.md

@@ -31,6 +31,7 @@ For an updated list of all of our released APIs please see our
 Our libraries are compatible with at least the three most recent, major Go
 releases. They are currently compatible with:
 
+- Go 1.22
 - Go 1.21
 - Go 1.20
 - Go 1.19

internal/gapicgen/cmd/genbot/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21-alpine as godist
+FROM golang:1.22-alpine as godist
 RUN go version
 
 FROM docker:25.0