Update opensearch-build workflow references from SHA to @main (#971)

Signed-off-by: Divya Madala <divyaasm@amazon.com>

Author: Divyaasm

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   Get-CI-Image-Tag:
-    uses: opensearch-project/opensearch-build/.github/workflows/get-ci-image-tag.yml@c2498b758c08fb7bc48476509a5fc1b8dd5f7493 # main
+    uses: opensearch-project/opensearch-build/.github/workflows/get-ci-image-tag.yml@main
     with:
       product: opensearch
 

.github/workflows/issue-dedupe.yml

@@ -20,7 +20,7 @@ jobs:
       (github.event_name == 'issues' &&
        github.event.issue.user.type != 'Bot' &&
        github.repository == 'opensearch-project/common-utils')
-    uses: opensearch-project/opensearch-build/.github/workflows/issue-dedupe-detect.yml@c2498b758c08fb7bc48476509a5fc1b8dd5f7493 # main
+    uses: opensearch-project/opensearch-build/.github/workflows/issue-dedupe-detect.yml@main
     permissions:
       contents: read
       issues: write
@@ -33,7 +33,7 @@ jobs:
 
   auto-close-issue:
     if: github.event_name == 'schedule' && github.repository == 'opensearch-project/common-utils'
-    uses: opensearch-project/opensearch-build/.github/workflows/issue-dedupe-autoclose.yml@c2498b758c08fb7bc48476509a5fc1b8dd5f7493 # main
+    uses: opensearch-project/opensearch-build/.github/workflows/issue-dedupe-autoclose.yml@main
     permissions:
       issues: write
     with:

.github/workflows/pr_review.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   Code-Diff-Analyzer:
-    uses: opensearch-project/opensearch-build/.github/workflows/code-diff-analyzer.yml@c2498b758c08fb7bc48476509a5fc1b8dd5f7493 # main
+    uses: opensearch-project/opensearch-build/.github/workflows/code-diff-analyzer.yml@main
     if: github.repository == 'opensearch-project/common-utils'
     permissions:
       id-token: write  # github oidc to assume aws roles
@@ -18,7 +18,7 @@ jobs:
       update_pr_comment_with_analyzer_report: true
 
   Code-Diff-Reviewer:
-    uses: opensearch-project/opensearch-build/.github/workflows/code-diff-reviewer.yml@c2498b758c08fb7bc48476509a5fc1b8dd5f7493 # main
+    uses: opensearch-project/opensearch-build/.github/workflows/code-diff-reviewer.yml@main
     needs: Code-Diff-Analyzer
     if: github.repository == 'opensearch-project/common-utils'
     permissions: