Update action versions, pin to commit hashes

.github/CODEOWNERS

@@ -0,0 +1,2 @@
+# Dependabot
+.github/workflows/* @nstrauss @liquidz00

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/main_pr_tests.yaml

@@ -17,10 +17,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.9'
           cache: 'pip'

.github/workflows/publish_docs.yaml

@@ -7,6 +7,10 @@ on:
     paths:
       - 'docs/**'
       - 'src/**'
+    workflow_dispatch:
+      inputs:
+        ref:
+          description: The branch, tag, or commit SHA1 to build the docs from.
 
 permissions:
   contents: read
@@ -26,10 +30,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          ref: ${{ inputs.ref }}
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.9'
 
@@ -39,10 +45,10 @@ jobs:
           make docs
 
       - name: Upload Artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3.0.1
         with:
           path: 'build/docs/'
 
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5

.github/workflows/publish_pypi.yaml

@@ -17,12 +17,12 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           ref: ${{ inputs.ref }}
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: '3.9'
 
@@ -33,4 +33,4 @@ jobs:
         run: make build
 
       - name: Publish package distributions to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@76f52bc884231f62b9a034ebfe128415bbaabdfc # v1.12.4