Bump peter-evans/create-pull-request from 5 to 6

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 5 to 6.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v5...v6)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/copyrights.yml

@@ -11,7 +11,7 @@ jobs:
     - name: Check
       run: |
         ./tools/check_copyrights.sh
-    - uses: peter-evans/create-pull-request@v5
+    - uses: peter-evans/create-pull-request@v6
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         branch: update-copyright-list-${{ github.ref_name }}

.github/workflows/generated-headers.yml

@@ -21,7 +21,7 @@ jobs:
         find ql -name *.am | xargs touch
         make dist
         rm QuantLib-*.tar.gz
-    - uses: peter-evans/create-pull-request@v5
+    - uses: peter-evans/create-pull-request@v6
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         branch: update-generated-headers-${{ github.ref_name }}

.github/workflows/misspell.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - uses: sobolevn/misspell-fixer-action@master
-    - uses: peter-evans/create-pull-request@v5
+    - uses: peter-evans/create-pull-request@v6
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         branch: misspell-fixes-${{ github.ref_name }}

.github/workflows/tidy.yml

@@ -17,7 +17,7 @@ jobs:
         cmake --preset linux-ci-build-with-clang-tidy
         cd build/linux-ci-build-with-clang-tidy
         cmake --build . -j1
-    - uses: peter-evans/create-pull-request@v5
+    - uses: peter-evans/create-pull-request@v6
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         branch: clang-tidy-fixes-${{ github.ref_name }}