Pin pytest below v8.0, use bump-my-version conda package (#1629)

### What kind of change does this PR introduce?

* Pins `pytest` below v8.0 due to breakage with `xdoctest`
* Now using the `bump-my-version` Conda-forge package

### Does this PR introduce a breaking change?

No.

### Other information:

Erotemic/xdoctest#151

environment.yml

@@ -29,9 +29,9 @@ dependencies:
   # Extras
   - flox
   # Testing and development dependencies
-  - black ==24.1.0
+  - black ==24.1.1
   - blackdoc ==0.3.9
-#  - bump-my-version  # The conda package is not as up-to-date as the PyPI package.
+  - bump-my-version >=0.17.1
   - cairosvg
   - codespell
   - coverage
@@ -57,7 +57,7 @@ dependencies:
   - pre-commit
   - pybtex
   - pylint
-  - pytest
+  - pytest <8.0  # Pinned due to breakage with xdoctest. See: https://github.com/Erotemic/xdoctest/issues/151
   - pytest-cov
   - pytest-socket
   - pytest-xdist >=3.2
@@ -76,6 +76,5 @@ dependencies:
   - yamllint
   - pip
   - pip:
-    - bump-my-version >=0.17.1  # The conda package is not as up-to-date as the PyPI package.
     - flake8-alphabetize
     - sphinxcontrib-svg2pdfconverter

pyproject.toml

@@ -78,7 +78,7 @@ dev = [
   "pre-commit >=2.9",
   "pybtex",
   "pylint",
-  "pytest",
+  "pytest <8.0", # Pinned due to breakage with xdoctest. See: https://github.com/Erotemic/xdoctest/issues/151
   "pytest-cov",
   "pytest-socket",
   "pytest-xdist[psutil] >=3.2",