Harden CI workflows (#40)

* Harden GitHub Actions workflows

- Pin every action ref to a full-length commit SHA with a trailing
  version comment, so floating tags like @v4 can't be re-pointed at
  malicious code.
- Bump outdated actions/checkout@v1 to @v4.3.1 (where present).
- Tag-triggered workflows now check out with fetch-depth: 1 and
  fetch-tags: true so the tag ref is available downstream.
- release-tracker.yml grants contents: write at the job level so the
  default GITHUB_TOKEN can push commits/tags back to the repo.

Signed-off-by: Tamal Saha <tamal@appscode.com>

* Use node-version: '22' in setup-node steps

Signed-off-by: Tamal Saha <tamal@appscode.com>

* Normalize Prepare git user, fetch-depth, drop permission-issues

Signed-off-by: Tamal Saha <tamal@appscode.com>

* Add 1gtm-app[bot] to kodiak auto_approve_usernames

Signed-off-by: Tamal Saha <tamal@appscode.com>

* Normalize kodiak auto_approve_usernames

Signed-off-by: Tamal Saha <tamal@appscode.com>

* Bump softprops/action-gh-release to v2.6.2; add permissions

Signed-off-by: Tamal Saha <tamal@appscode.com>

---------

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/.kodiak.toml

@@ -15,4 +15,4 @@ strip_html_comments = true # default: false
 always = true # default: false
 
 [approve]
-auto_approve_usernames = ["1gtm", "tamalsaha"]
+auto_approve_usernames = ["tamalsaha", "1gtm", "1gtm-app[bot]"]

.github/workflows/ci.yml

@@ -18,12 +18,12 @@ jobs:
     runs-on: ubuntu-24.04
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Use Node.js 10.x
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
-          node-version: 10.x
+          node-version: '22'
 
       - name: Build
         env:

.github/workflows/release.yml

@@ -13,13 +13,17 @@ jobs:
   build:
     name: Build
     runs-on: ubuntu-24.04
+    permissions:
+      contents: write
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+        with:
+          fetch-depth: 0
 
       - name: Use Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
-          node-version: 10.x
+          node-version: '22'
 
       - name: Build
         run: |