Replace stalebot with "stale" GitHub action

.github/workflows/stale.yml

@@ -1,17 +1,17 @@
-# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
+# This workflow warns and then closes issues that have had no activity for a specified amount of time.
 #
 # You can adjust the behavior by modifying this file.
 # For more information, see:
 # https://github.com/actions/stale
-name: Mark stale issues and pull requests
+name: Mark stale issues
 
 on:
   schedule:
-    # Job will run at midnight on the 1st of each month (POSIX time syntax)
-    - cron: '0 0 1 * *'
+  - cron: '0 0 * * *' # Run every night at midnight
 
 jobs:
   stale:
+
     runs-on: ubuntu-latest
     permissions:
       issues: write
@@ -21,12 +21,18 @@ jobs:
     - uses: actions/stale@v5
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-        # Stale issue settings
-        days-before-issue-stale: 30
-        days-before-issue-close: 30
         stale-issue-label: 'stale'
-        stale-issue-message: 'This issue is stale because it has been open for 30 days with no activity.'
-        close-issue-message: "This issue was closed because it has been inactive for 30 days since being marked as stale."
-        # Never mark PRs as stale
+        exempt-issue-labels:
+          - 'category: Discussion'
+          - 'category: Feature Request'
+          - 'deferred'
+          - 'help needed: Open Research Problem'
+          - 'help needed: Request Input from Community'
+          - 'never stale'
+          - 'TODO: Documentation'
+        days-before-issue-stale: 30
+        days-before-issue-close: 7
+        stale-issue-message: 'This issue has been automatically marked as stale because it has not had recent activity. If there are no updates within 7 days it will be closed. You can add the "never stale" tag to prevent the issue from closing this issue.'
+        close-issue-message: 'Closing due to inactivity'
         days-before-pr-stale: -1
         days-before-pr-close: -1

CHANGELOG.md

@@ -19,7 +19,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Added fixed level budget diagnostic to budget operations table
 - Function `rename_speciesconc_to_speciesconcvv` in `gcpy/benchmark/modules/benchmark_utils.py`
 - Function `copy_file_to_dir` in `gcpy/util.py`.  This is a wrapper for `shutil.copyfile`.
-
+- GitHub Action config file `.github/workflows/stale.yml`, which replaces StaleBot
+
 ### Changed
 - Bump pip from 23.2.1 to 23.3 (dependabot suggested this)
 - Bump pypdf from 3.16.1 to 3.17.0 (dependabot suggested this)
@@ -39,7 +40,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Benchmark functions now call `rename_speciesconc_to_speciesconcvv`
 - Create radionuclide, STE flux, and mass conservation tables for Ref and Dev versions in TransportTracers benchmarks
 - Use new function `copy_file_to_dir` to copy the benchmark script and configuration file to the benchmark results folders
-
+- Updated GitHub stalebot config file `stale.yml` with new issue/PR labels that should not go stale
+
 ### Fixed
 - CS inquiry functions in `gcpy/cstools.py` now work properly for `xr.Dataset` and `xr.DataArray` objects
 - Prevent an import error by using `seaborn-v0_8-darkgrid` in`gcpy/benchmark/modules/benchmark_models_vs_obs.py`
@@ -58,6 +60,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Environment file `docs/environment_files/environment.yml`
 - Environment file `docs/environment_files/requirements.txt`
 - Removed `awscli` from the GCPy environment; version 2 is no longer available on conda-forge or PyPi
+- GitHub config files `.github/stale.yml` and `.github/no-response.yml`
 
 ## [1.4.2] - 2024-01-26
 ### Added