Remove LXML from fprime-tools (nasa#262)

* Removing LXML from fprime-tools

* Upgrading past Python 3.8

Author: LeStarch

.github/workflows/fprime-tools-ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/integration-tests.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         fprime-version: ["v3.4.3", "v3.5.1", "v3.6.0", "devel"]
         exclude:
         - python-version: 3.13

pyproject.toml

@@ -7,7 +7,7 @@ name = "fprime-tools"
 dynamic = ["version"]
 description = "F Prime Flight Software tooling, helpers and core data types"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 license = {file = "LICENSE.txt"}
 keywords = ["fprime", "embedded", "nasa", "flight", "software"]
 authors = [
@@ -22,7 +22,6 @@ classifiers = [
     "Operating System :: POSIX",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -33,7 +32,6 @@ classifiers = [
 ]
 
 dependencies = [
-    "lxml>=4.6.3",
     "Markdown>=3.3.4",
     "pexpect>=4.8.0",
     "pytest>=6.2.4",