Prevent Unnecessary Version Bumps in go.mod During Go Version Updates

This PR addresses issue kubernetes#20770, where the minikube automation (triggered by make `update-golang-version`) unnecessarily bumped minor or patch versions in `go.mod` when updating the Go version. Following Kubernetes' practice, which avoids such bumps in `go.mod`, this change ensures only the go directive is updated to the stable Go version.

**Changes:**
- Added `go.mod` to the schema map in `hack/update/golang_version/update_golang_version.go` with a regex (go 1\.\d+\.\d+) to update the go directive to {{.StableVersion}} (e.g., go 1.24.2).
- This ensures the automation updates only the go directive without modifying module dependencies, aligning with Kubernetes' `go.mod` behavior.

**Impact:**
- Running make `update-golang-version` now updates the go directive (e.g., from go 1.22.3 to go 1.24.2) without unintended dependency version bumps.
- Tested by setting go 1.22.3 in go.mod, running go mod tidy and make update-golang-version, and verifying only the go directive and toolchain changed.

fixes: kubernetes#20773

Author: Victorthedev

.github/workflows/build.yml

@@ -12,7 +12,7 @@ on:
       - "!deploy/iso/**"
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/docs.yml

@@ -6,7 +6,7 @@ on:
       - master
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/functional_verified.yml

@@ -22,7 +22,7 @@ on:
       - deleted
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 
 permissions:
   contents: read

.github/workflows/leaderboard.yml

@@ -6,7 +6,7 @@ on:
       - 'v*-beta.*'
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/master.yml

@@ -14,7 +14,7 @@ on:
       - "!deploy/iso/**"
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/minikube-image-benchmark.yml

@@ -6,7 +6,7 @@ on:
     - cron: "0 2,14 * * *"
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/pr.yml

@@ -12,7 +12,7 @@ on:
       - "!deploy/iso/**"
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/sync-minikube.yml

@@ -6,7 +6,7 @@ on:
     - cron: "0 2,14 * * *"
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/time-to-k8s-public-chart.yml

@@ -6,7 +6,7 @@ on:
     - cron: "0 2,14 * * *"
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read
 

.github/workflows/time-to-k8s.yml

@@ -5,7 +5,7 @@ on:
     types: [released]
 env:
   GOPROXY: https://proxy.golang.org
-  GO_VERSION: '1.24.0'
+  GO_VERSION: '1.24.2'
 permissions:
   contents: read