Pin Go version to 1.22 everywhere, tidy module (#109)

-   Reverts prior changes (upgrade to 1.23 #107, `go get -u` #106),
    as 1.23 is not yet supported by the cloudbuild script.
-   Upgrade gRPC, due to missing go.sum entries in the stack.
-   Use `go mod tidy -go=1.22` to clean things up.
-   Read and specify the builder version in the cloudbuild files.
    The worker had been defaulting to 1.15, which didn't support
    point releases in module declarations.

Tested on the dev environment.

cloudbuild.dev.yaml

@@ -1,5 +1,12 @@
 steps:
-- name: 'gcr.io/cloud-builders/go'
+- name: 'gcr.io/cloud-builders/go:1.22'
+  args: ['version']
+  env: [GOPATH=/gopath']
+  volumes:
+  - name: 'go'
+    path: '/gopath'
+
+- name: 'gcr.io/cloud-builders/go:1.22'
   args: ['get', '-d']
   env: [GOPATH=/gopath']
   volumes:

cloudbuild.yaml

@@ -1,12 +1,19 @@
 steps:
-- name: 'gcr.io/cloud-builders/go'
+- name: 'gcr.io/cloud-builders/go:1.22'
+  args: ['version']
+  env: [GOPATH=/gopath']
+  volumes:
+  - name: 'go'
+    path: '/gopath'
+
+- name: 'gcr.io/cloud-builders/go:1.22'
   args: ['get', '-d']
   env: [GOPATH=/gopath']
   volumes:
   - name: 'go'
     path: '/gopath'
 
-- name: 'gcr.io/cloud-builders/gcloud'
+- name: 'gcr.io/cloud-builders/gcloud:1.22'
   args: ['app','deploy', 'cron.yaml']
   timeout: 600s
   env: ['GOPATH=/gopath']

go.mod

@@ -1,46 +1,41 @@
 module github.com/recursecenter/pairing-bot
 
-go 1.23
+go 1.22
 
 require (
-	cloud.google.com/go/firestore v1.17.0
+	cloud.google.com/go/firestore v1.14.0
 	github.com/google/go-cmp v0.6.0
-	google.golang.org/api v0.213.0
+	google.golang.org/api v0.167.0
 	google.golang.org/grpc v1.69.2
 )
 
 require (
-	cloud.google.com/go v0.117.0 // indirect
-	cloud.google.com/go/auth v0.13.0 // indirect
-	cloud.google.com/go/auth/oauth2adapt v0.2.6 // indirect
-	cloud.google.com/go/compute v1.31.0 // indirect
-	cloud.google.com/go/compute/metadata v0.6.0 // indirect
-	cloud.google.com/go/longrunning v0.6.3 // indirect
+	cloud.google.com/go v0.112.0 // indirect
+	cloud.google.com/go/compute/metadata v0.5.2 // indirect
+	cloud.google.com/go/longrunning v0.5.5 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
-	github.com/google/s2a-go v0.1.8 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.3.4 // indirect
-	github.com/googleapis/gax-go/v2 v2.14.0 // indirect
+	github.com/google/s2a-go v0.1.7 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.2 // indirect
+	github.com/googleapis/gax-go/v2 v2.12.1 // indirect
 	go.opencensus.io v0.24.0 // indirect
-	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
-	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.58.0 // indirect
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.58.0 // indirect
-	go.opentelemetry.io/otel v1.33.0 // indirect
-	go.opentelemetry.io/otel/metric v1.33.0 // indirect
-	go.opentelemetry.io/otel/trace v1.33.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.49.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.49.0 // indirect
+	go.opentelemetry.io/otel v1.31.0 // indirect
+	go.opentelemetry.io/otel/metric v1.31.0 // indirect
+	go.opentelemetry.io/otel/trace v1.31.0 // indirect
 	golang.org/x/crypto v0.31.0 // indirect
 	golang.org/x/net v0.33.0 // indirect
-	golang.org/x/oauth2 v0.24.0 // indirect
+	golang.org/x/oauth2 v0.23.0 // indirect
 	golang.org/x/sync v0.10.0 // indirect
 	golang.org/x/sys v0.28.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
-	golang.org/x/time v0.8.0 // indirect
-	google.golang.org/appengine v1.6.8 // indirect
-	google.golang.org/genproto v0.0.0-20241219192143-6b3ec007d9bb // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20241219192143-6b3ec007d9bb // indirect
+	golang.org/x/time v0.5.0 // indirect
+	google.golang.org/genproto v0.0.0-20240221002015-b0ce06bbee7c // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20241015192408-796eee8c2d53 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20241219192143-6b3ec007d9bb // indirect
 	google.golang.org/protobuf v1.36.0 // indirect
 )