Upgrade to Go 1.19 (#2368)

* Upgrade to Go 1.19

* Fix gofmt

Author: sethvargo

.github/workflows/ci.yaml

@@ -26,16 +26,10 @@ jobs:
 
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.18'
+          go-version: '1.19'
 
-      - uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: ${{ runner.os }}-go-test-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-test-
-            ${{ runner.os }}-go-
+      - name: Download modules
+        run: go mod download
 
       - name: go-test
         shell: bash
@@ -74,16 +68,10 @@ jobs:
 
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.18'
+          go-version: '1.19'
 
-      - uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: ${{ runner.os }}-go-lint-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-lint-
-            ${{ runner.os }}-go-
+      - name: Download modules
+        run: go mod download
 
       - name: go-lint
         shell: bash

Makefile

@@ -18,12 +18,24 @@ GO_FILES = $(shell find . -name \*.go)
 MD_FILES = $(shell find . -name \*.md)
 PO_FILES = $(shell find . -name \*.po)
 
+# diff-check runs git-diff and fails if there are any changes.
+diff-check:
+	@FINDINGS="$$(git status -s -uall)" ; \
+		if [ -n "$${FINDINGS}" ]; then \
+			echo "Changed files:\n\n" ; \
+			echo "$${FINDINGS}\n\n" ; \
+			echo "Diffs:\n\n" ; \
+			git diff ; \
+			git diff --cached ; \
+			exit 1 ; \
+		fi
+.PHONY: diff-check
+
 generate:
 	@go generate ./...
 .PHONY: generate
 
-generate-check: generate
-	@git update-index --refresh && git diff-index --quiet HEAD --
+generate-check: generate diff-check
 .PHONY: generate-check
 
 # lint uses the same linter as CI and tries to report the same results running