core: upgrade Go requirement to 1.26.0 (#8466)

* core: upgrade Go requirement to 1.26.0

As golang 1.27 has been released, this PR
- Bump Go version requirement to 1.26.0
- Update Go build version to 1.27.0

This is also for solving the issue encountered in 8092 of k8s update

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Bump golang ci

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Fix

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Migrate faillint to forbidigo, as failint has not bee updated for more than a year

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

---------

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

.golangci.yml

@@ -10,6 +10,7 @@ linters:
     - canonicalheader
     - copyloopvar
     - durationcheck
+    - forbidigo
     - godoclint
     - gosec
     - govet
@@ -43,6 +44,13 @@ linters:
           - perfsprint
           - gosec
   settings:
+    forbidigo:
+      analyze-types: true
+      forbid:
+        - pattern: "^prometheus\\.(NewCounter|NewCounterVec|NewGauge|NewGaugeVec|NewGaugeFunc|NewHistogram|NewHistogramVec|NewSummary|NewSummaryVec)$"
+          pkg: "^github\\.com/prometheus/client_golang/prometheus$"
+          msg: use github.com/prometheus/client_golang/prometheus/promauto
+
     govet:
       enable:
         - nilness